Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
4746118a | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1992 Free Software Foundation, Inc. |
570d7624 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
570d7624 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
ffd56f97 | 20 | #include "config.h" |
570d7624 JB |
21 | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
bfb61299 JB |
24 | |
25 | #ifdef VMS | |
de5bf5d3 | 26 | #include "vms-pwd.h" |
bfb61299 | 27 | #else |
570d7624 | 28 | #include <pwd.h> |
bfb61299 JB |
29 | #endif |
30 | ||
570d7624 | 31 | #include <ctype.h> |
bfb61299 JB |
32 | |
33 | #ifdef VMS | |
34 | #include "dir.h" | |
35 | #include <perror.h> | |
36 | #include <stddef.h> | |
37 | #include <string.h> | |
bfb61299 JB |
38 | #endif |
39 | ||
570d7624 JB |
40 | #include <errno.h> |
41 | ||
bfb61299 | 42 | #ifndef vax11c |
570d7624 JB |
43 | extern int errno; |
44 | extern char *sys_errlist[]; | |
45 | extern int sys_nerr; | |
46 | #endif | |
47 | ||
48 | #define err_str(a) ((a) < sys_nerr ? sys_errlist[a] : "unknown error") | |
49 | ||
50 | #ifdef APOLLO | |
51 | #include <sys/time.h> | |
52 | #endif | |
53 | ||
570d7624 | 54 | #include "lisp.h" |
8d4e077b | 55 | #include "intervals.h" |
570d7624 JB |
56 | #include "buffer.h" |
57 | #include "window.h" | |
58 | ||
59 | #ifdef VMS | |
570d7624 JB |
60 | #include <file.h> |
61 | #include <rmsdef.h> | |
62 | #include <fab.h> | |
63 | #include <nam.h> | |
64 | #endif | |
65 | ||
de5bf5d3 | 66 | #include "systime.h" |
570d7624 JB |
67 | |
68 | #ifdef HPUX | |
69 | #include <netio.h> | |
9b7828a5 | 70 | #ifndef HPUX8 |
570d7624 JB |
71 | #include <errnet.h> |
72 | #endif | |
9b7828a5 | 73 | #endif |
570d7624 JB |
74 | |
75 | #ifndef O_WRONLY | |
76 | #define O_WRONLY 1 | |
77 | #endif | |
78 | ||
79 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
80 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
81 | ||
82 | /* Nonzero during writing of auto-save files */ | |
83 | int auto_saving; | |
84 | ||
85 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
86 | a new file with the same mode as the original */ | |
87 | int auto_save_mode_bits; | |
88 | ||
32f4334d RS |
89 | /* Alist of elements (REGEXP . HANDLER) for file names |
90 | whose I/O is done with a special handler. */ | |
91 | Lisp_Object Vfile_name_handler_alist; | |
92 | ||
570d7624 JB |
93 | /* Nonzero means, when reading a filename in the minibuffer, |
94 | start out by inserting the default directory into the minibuffer. */ | |
95 | int insert_default_directory; | |
96 | ||
97 | /* On VMS, nonzero means write new files with record format stmlf. | |
98 | Zero means use var format. */ | |
99 | int vms_stmlf_recfm; | |
100 | ||
101 | Lisp_Object Qfile_error, Qfile_already_exists; | |
102 | ||
15c65264 RS |
103 | Lisp_Object Qfile_name_history; |
104 | ||
570d7624 JB |
105 | report_file_error (string, data) |
106 | char *string; | |
107 | Lisp_Object data; | |
108 | { | |
109 | Lisp_Object errstring; | |
110 | ||
111 | if (errno >= 0 && errno < sys_nerr) | |
112 | errstring = build_string (sys_errlist[errno]); | |
113 | else | |
114 | errstring = build_string ("undocumented error code"); | |
115 | ||
116 | /* System error messages are capitalized. Downcase the initial | |
117 | unless it is followed by a slash. */ | |
118 | if (XSTRING (errstring)->data[1] != '/') | |
119 | XSTRING (errstring)->data[0] = DOWNCASE (XSTRING (errstring)->data[0]); | |
120 | ||
121 | while (1) | |
122 | Fsignal (Qfile_error, | |
123 | Fcons (build_string (string), Fcons (errstring, data))); | |
124 | } | |
b5148e85 RS |
125 | |
126 | close_file_unwind (fd) | |
127 | Lisp_Object fd; | |
128 | { | |
129 | close (XFASTINT (fd)); | |
130 | } | |
570d7624 | 131 | \f |
0bf2eed2 RS |
132 | Lisp_Object Qexpand_file_name; |
133 | Lisp_Object Qdirectory_file_name; | |
134 | Lisp_Object Qfile_name_directory; | |
135 | Lisp_Object Qfile_name_nondirectory; | |
136 | Lisp_Object Qfile_name_as_directory; | |
32f4334d RS |
137 | Lisp_Object Qcopy_file; |
138 | Lisp_Object Qmake_directory; | |
139 | Lisp_Object Qdelete_directory; | |
140 | Lisp_Object Qdelete_file; | |
141 | Lisp_Object Qrename_file; | |
142 | Lisp_Object Qadd_name_to_file; | |
143 | Lisp_Object Qmake_symbolic_link; | |
144 | Lisp_Object Qfile_exists_p; | |
145 | Lisp_Object Qfile_executable_p; | |
146 | Lisp_Object Qfile_readable_p; | |
147 | Lisp_Object Qfile_symlink_p; | |
148 | Lisp_Object Qfile_writable_p; | |
149 | Lisp_Object Qfile_directory_p; | |
150 | Lisp_Object Qfile_accessible_directory_p; | |
151 | Lisp_Object Qfile_modes; | |
152 | Lisp_Object Qset_file_modes; | |
153 | Lisp_Object Qfile_newer_than_file_p; | |
154 | Lisp_Object Qinsert_file_contents; | |
155 | Lisp_Object Qwrite_region; | |
156 | Lisp_Object Qverify_visited_file_modtime; | |
157 | ||
158 | /* If FILENAME is handled specially on account of its syntax, | |
159 | return its handler function. Otherwise, return nil. */ | |
160 | ||
161 | Lisp_Object | |
162 | find_file_handler (filename) | |
163 | Lisp_Object filename; | |
164 | { | |
165 | Lisp_Object chain; | |
3eac9910 | 166 | for (chain = Vfile_name_handler_alist; XTYPE (chain) == Lisp_Cons; |
32f4334d RS |
167 | chain = XCONS (chain)->cdr) |
168 | { | |
169 | Lisp_Object elt; | |
170 | elt = XCONS (chain)->car; | |
171 | if (XTYPE (elt) == Lisp_Cons) | |
172 | { | |
173 | Lisp_Object string; | |
174 | string = XCONS (elt)->car; | |
175 | if (XTYPE (string) == Lisp_String | |
09121adc | 176 | && fast_string_match (string, filename) >= 0) |
32f4334d RS |
177 | return XCONS (elt)->cdr; |
178 | } | |
179 | } | |
180 | return Qnil; | |
181 | } | |
182 | \f | |
570d7624 JB |
183 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
184 | 1, 1, 0, | |
185 | "Return the directory component in file name NAME.\n\ | |
186 | Return nil if NAME does not include a directory.\n\ | |
187 | Otherwise return a directory spec.\n\ | |
188 | Given a Unix syntax file name, returns a string ending in slash;\n\ | |
189 | on VMS, perhaps instead a string ending in `:', `]' or `>'.") | |
190 | (file) | |
191 | Lisp_Object file; | |
192 | { | |
193 | register unsigned char *beg; | |
194 | register unsigned char *p; | |
0bf2eed2 | 195 | Lisp_Object handler; |
570d7624 JB |
196 | |
197 | CHECK_STRING (file, 0); | |
198 | ||
0bf2eed2 RS |
199 | /* If the file name has special constructs in it, |
200 | call the corresponding file handler. */ | |
201 | handler = find_file_handler (file); | |
202 | if (!NILP (handler)) | |
203 | return call2 (handler, Qfile_name_directory, file); | |
204 | ||
570d7624 JB |
205 | beg = XSTRING (file)->data; |
206 | p = beg + XSTRING (file)->size; | |
207 | ||
208 | while (p != beg && p[-1] != '/' | |
209 | #ifdef VMS | |
210 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
211 | #endif /* VMS */ | |
212 | ) p--; | |
213 | ||
214 | if (p == beg) | |
215 | return Qnil; | |
216 | return make_string (beg, p - beg); | |
217 | } | |
218 | ||
219 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, Sfile_name_nondirectory, | |
220 | 1, 1, 0, | |
221 | "Return file name NAME sans its directory.\n\ | |
222 | For example, in a Unix-syntax file name,\n\ | |
223 | this is everything after the last slash,\n\ | |
224 | or the entire name if it contains no slash.") | |
225 | (file) | |
226 | Lisp_Object file; | |
227 | { | |
228 | register unsigned char *beg, *p, *end; | |
0bf2eed2 | 229 | Lisp_Object handler; |
570d7624 JB |
230 | |
231 | CHECK_STRING (file, 0); | |
232 | ||
0bf2eed2 RS |
233 | /* If the file name has special constructs in it, |
234 | call the corresponding file handler. */ | |
235 | handler = find_file_handler (file); | |
236 | if (!NILP (handler)) | |
237 | return call2 (handler, Qfile_name_nondirectory, file); | |
238 | ||
570d7624 JB |
239 | beg = XSTRING (file)->data; |
240 | end = p = beg + XSTRING (file)->size; | |
241 | ||
242 | while (p != beg && p[-1] != '/' | |
243 | #ifdef VMS | |
244 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
245 | #endif /* VMS */ | |
246 | ) p--; | |
247 | ||
248 | return make_string (p, end - p); | |
249 | } | |
250 | \f | |
251 | char * | |
252 | file_name_as_directory (out, in) | |
253 | char *out, *in; | |
254 | { | |
255 | int size = strlen (in) - 1; | |
256 | ||
257 | strcpy (out, in); | |
258 | ||
259 | #ifdef VMS | |
260 | /* Is it already a directory string? */ | |
261 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
262 | return out; | |
263 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
264 | else if (! index (in, '/') | |
265 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
266 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
267 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
268 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
269 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
270 | && in[size] == '1'))) | |
271 | { | |
272 | register char *p, *dot; | |
273 | char brack; | |
274 | ||
275 | /* x.dir -> [.x] | |
276 | dir:x.dir --> dir:[x] | |
277 | dir:[x]y.dir --> dir:[x.y] */ | |
278 | p = in + size; | |
279 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
280 | if (p != in) | |
281 | { | |
282 | strncpy (out, in, p - in); | |
283 | out[p - in] = '\0'; | |
284 | if (*p == ':') | |
285 | { | |
286 | brack = ']'; | |
287 | strcat (out, ":["); | |
288 | } | |
289 | else | |
290 | { | |
291 | brack = *p; | |
292 | strcat (out, "."); | |
293 | } | |
294 | p++; | |
295 | } | |
296 | else | |
297 | { | |
298 | brack = ']'; | |
299 | strcpy (out, "[."); | |
300 | } | |
bfb61299 JB |
301 | dot = index (p, '.'); |
302 | if (dot) | |
570d7624 JB |
303 | { |
304 | /* blindly remove any extension */ | |
305 | size = strlen (out) + (dot - p); | |
306 | strncat (out, p, dot - p); | |
307 | } | |
308 | else | |
309 | { | |
310 | strcat (out, p); | |
311 | size = strlen (out); | |
312 | } | |
313 | out[size++] = brack; | |
314 | out[size] = '\0'; | |
315 | } | |
316 | #else /* not VMS */ | |
317 | /* For Unix syntax, Append a slash if necessary */ | |
318 | if (out[size] != '/') | |
319 | strcat (out, "/"); | |
320 | #endif /* not VMS */ | |
321 | return out; | |
322 | } | |
323 | ||
324 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
325 | Sfile_name_as_directory, 1, 1, 0, | |
326 | "Return a string representing file FILENAME interpreted as a directory.\n\ | |
327 | This operation exists because a directory is also a file, but its name as\n\ | |
328 | a directory is different from its name as a file.\n\ | |
329 | The result can be used as the value of `default-directory'\n\ | |
330 | or passed as second argument to `expand-file-name'.\n\ | |
331 | For a Unix-syntax file name, just appends a slash.\n\ | |
332 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc.") | |
333 | (file) | |
334 | Lisp_Object file; | |
335 | { | |
336 | char *buf; | |
0bf2eed2 | 337 | Lisp_Object handler; |
570d7624 JB |
338 | |
339 | CHECK_STRING (file, 0); | |
265a9e55 | 340 | if (NILP (file)) |
570d7624 | 341 | return Qnil; |
0bf2eed2 RS |
342 | |
343 | /* If the file name has special constructs in it, | |
344 | call the corresponding file handler. */ | |
345 | handler = find_file_handler (file); | |
346 | if (!NILP (handler)) | |
347 | return call2 (handler, Qfile_name_as_directory, file); | |
348 | ||
570d7624 JB |
349 | buf = (char *) alloca (XSTRING (file)->size + 10); |
350 | return build_string (file_name_as_directory (buf, XSTRING (file)->data)); | |
351 | } | |
352 | \f | |
353 | /* | |
354 | * Convert from directory name to filename. | |
355 | * On VMS: | |
356 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
357 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
358 | * On UNIX, it's simple: just make sure there is a terminating / | |
359 | ||
360 | * Value is nonzero if the string output is different from the input. | |
361 | */ | |
362 | ||
363 | directory_file_name (src, dst) | |
364 | char *src, *dst; | |
365 | { | |
366 | long slen; | |
367 | #ifdef VMS | |
368 | long rlen; | |
369 | char * ptr, * rptr; | |
370 | char bracket; | |
371 | struct FAB fab = cc$rms_fab; | |
372 | struct NAM nam = cc$rms_nam; | |
373 | char esa[NAM$C_MAXRSS]; | |
374 | #endif /* VMS */ | |
375 | ||
376 | slen = strlen (src); | |
377 | #ifdef VMS | |
378 | if (! index (src, '/') | |
379 | && (src[slen - 1] == ']' | |
380 | || src[slen - 1] == ':' | |
381 | || src[slen - 1] == '>')) | |
382 | { | |
383 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
384 | fab.fab$l_fna = src; | |
385 | fab.fab$b_fns = slen; | |
386 | fab.fab$l_nam = &nam; | |
387 | fab.fab$l_fop = FAB$M_NAM; | |
388 | ||
389 | nam.nam$l_esa = esa; | |
390 | nam.nam$b_ess = sizeof esa; | |
391 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
392 | ||
393 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
394 | if (SYS$PARSE(&fab, 0, 0) == RMS$_NORMAL) | |
395 | { | |
396 | slen = nam.nam$b_esl; | |
397 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
398 | slen -= 2; | |
399 | esa[slen] = '\0'; | |
400 | src = esa; | |
401 | } | |
402 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
403 | { | |
404 | /* what about when we have logical_name:???? */ | |
405 | if (src[slen - 1] == ':') | |
406 | { /* Xlate logical name and see what we get */ | |
407 | ptr = strcpy (dst, src); /* upper case for getenv */ | |
408 | while (*ptr) | |
409 | { | |
410 | if ('a' <= *ptr && *ptr <= 'z') | |
411 | *ptr -= 040; | |
412 | ptr++; | |
413 | } | |
414 | dst[slen - 1] = 0; /* remove colon */ | |
415 | if (!(src = egetenv (dst))) | |
416 | return 0; | |
417 | /* should we jump to the beginning of this procedure? | |
418 | Good points: allows us to use logical names that xlate | |
419 | to Unix names, | |
420 | Bad points: can be a problem if we just translated to a device | |
421 | name... | |
422 | For now, I'll punt and always expect VMS names, and hope for | |
423 | the best! */ | |
424 | slen = strlen (src); | |
425 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
426 | { /* no recursion here! */ | |
427 | strcpy (dst, src); | |
428 | return 0; | |
429 | } | |
430 | } | |
431 | else | |
432 | { /* not a directory spec */ | |
433 | strcpy (dst, src); | |
434 | return 0; | |
435 | } | |
436 | } | |
437 | bracket = src[slen - 1]; | |
438 | ||
439 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
440 | opening bracket. */ | |
bfb61299 JB |
441 | ptr = index (src, bracket - 2); |
442 | if (ptr == 0) | |
570d7624 JB |
443 | { /* no opening bracket */ |
444 | strcpy (dst, src); | |
445 | return 0; | |
446 | } | |
447 | if (!(rptr = rindex (src, '.'))) | |
448 | rptr = ptr; | |
449 | slen = rptr - src; | |
450 | strncpy (dst, src, slen); | |
451 | dst[slen] = '\0'; | |
452 | if (*rptr == '.') | |
453 | { | |
454 | dst[slen++] = bracket; | |
455 | dst[slen] = '\0'; | |
456 | } | |
457 | else | |
458 | { | |
459 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
460 | then translate the device and recurse. */ | |
461 | if (dst[slen - 1] == ':' | |
462 | && dst[slen - 2] != ':' /* skip decnet nodes */ | |
463 | && strcmp(src + slen, "[000000]") == 0) | |
464 | { | |
465 | dst[slen - 1] = '\0'; | |
466 | if ((ptr = egetenv (dst)) | |
467 | && (rlen = strlen (ptr) - 1) > 0 | |
468 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
469 | && ptr[rlen - 1] == '.') | |
470 | { | |
72b21817 RS |
471 | char * buf = (char *) alloca (strlen (ptr) + 1); |
472 | strcpy (buf, ptr); | |
473 | buf[rlen - 1] = ']'; | |
474 | buf[rlen] = '\0'; | |
475 | return directory_file_name (buf, dst); | |
570d7624 JB |
476 | } |
477 | else | |
478 | dst[slen - 1] = ':'; | |
479 | } | |
480 | strcat (dst, "[000000]"); | |
481 | slen += 8; | |
482 | } | |
483 | rptr++; | |
484 | rlen = strlen (rptr) - 1; | |
485 | strncat (dst, rptr, rlen); | |
486 | dst[slen + rlen] = '\0'; | |
487 | strcat (dst, ".DIR.1"); | |
488 | return 1; | |
489 | } | |
490 | #endif /* VMS */ | |
491 | /* Process as Unix format: just remove any final slash. | |
492 | But leave "/" unchanged; do not change it to "". */ | |
493 | strcpy (dst, src); | |
4746118a | 494 | if (slen > 1 && dst[slen - 1] == '/') |
570d7624 JB |
495 | dst[slen - 1] = 0; |
496 | return 1; | |
497 | } | |
498 | ||
499 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
500 | 1, 1, 0, | |
501 | "Returns the file name of the directory named DIR.\n\ | |
502 | This is the name of the file that holds the data for the directory DIR.\n\ | |
503 | This operation exists because a directory is also a file, but its name as\n\ | |
504 | a directory is different from its name as a file.\n\ | |
505 | In Unix-syntax, this function just removes the final slash.\n\ | |
506 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\",\n\ | |
507 | it returns a file name such as \"[X]Y.DIR.1\".") | |
508 | (directory) | |
509 | Lisp_Object directory; | |
510 | { | |
511 | char *buf; | |
0bf2eed2 | 512 | Lisp_Object handler; |
570d7624 JB |
513 | |
514 | CHECK_STRING (directory, 0); | |
515 | ||
265a9e55 | 516 | if (NILP (directory)) |
570d7624 | 517 | return Qnil; |
0bf2eed2 RS |
518 | |
519 | /* If the file name has special constructs in it, | |
520 | call the corresponding file handler. */ | |
521 | handler = find_file_handler (directory); | |
522 | if (!NILP (handler)) | |
523 | return call2 (handler, Qdirectory_file_name, directory); | |
524 | ||
570d7624 JB |
525 | #ifdef VMS |
526 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
527 | logical name translation. an equivalence string can be up to 255 | |
528 | chars long, so grab that much extra space... - sss */ | |
529 | buf = (char *) alloca (XSTRING (directory)->size + 20 + 255); | |
530 | #else | |
531 | buf = (char *) alloca (XSTRING (directory)->size + 20); | |
532 | #endif | |
533 | directory_file_name (XSTRING (directory)->data, buf); | |
534 | return build_string (buf); | |
535 | } | |
536 | ||
537 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
538 | "Generate temporary file name (string) starting with PREFIX (a string).\n\ | |
539 | The Emacs process number forms part of the result,\n\ | |
540 | so there is no danger of generating a name being used by another process.") | |
541 | (prefix) | |
542 | Lisp_Object prefix; | |
543 | { | |
544 | Lisp_Object val; | |
545 | val = concat2 (prefix, build_string ("XXXXXX")); | |
546 | mktemp (XSTRING (val)->data); | |
547 | return val; | |
548 | } | |
549 | \f | |
550 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
551 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
552 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
553 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
554 | the current buffer's value of default-directory is used.\n\ | |
b72dea2a JB |
555 | Path components that are `.' are removed, and \n\ |
556 | path components followed by `..' are removed, along with the `..' itself;\n\ | |
557 | note that these simplifications are done without checking the resulting\n\ | |
558 | paths in the file system.\n\ | |
559 | An initial `~/' expands to your home directory.\n\ | |
560 | An initial `~USER/' expands to USER's home directory.\n\ | |
570d7624 JB |
561 | See also the function `substitute-in-file-name'.") |
562 | (name, defalt) | |
563 | Lisp_Object name, defalt; | |
564 | { | |
565 | unsigned char *nm; | |
566 | ||
567 | register unsigned char *newdir, *p, *o; | |
568 | int tlen; | |
569 | unsigned char *target; | |
570 | struct passwd *pw; | |
571 | int lose; | |
572 | #ifdef VMS | |
573 | unsigned char * colon = 0; | |
574 | unsigned char * close = 0; | |
575 | unsigned char * slash = 0; | |
576 | unsigned char * brack = 0; | |
577 | int lbrack = 0, rbrack = 0; | |
578 | int dots = 0; | |
579 | #endif /* VMS */ | |
0bf2eed2 | 580 | Lisp_Object handler; |
570d7624 JB |
581 | |
582 | CHECK_STRING (name, 0); | |
583 | ||
0bf2eed2 RS |
584 | /* If the file name has special constructs in it, |
585 | call the corresponding file handler. */ | |
586 | handler = find_file_handler (name); | |
587 | if (!NILP (handler)) | |
09121adc | 588 | return call3 (handler, Qexpand_file_name, name, defalt); |
0bf2eed2 | 589 | |
570d7624 JB |
590 | #ifdef VMS |
591 | /* Filenames on VMS are always upper case. */ | |
592 | name = Fupcase (name); | |
593 | #endif | |
594 | ||
595 | nm = XSTRING (name)->data; | |
596 | ||
597 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
598 | If no /./ or /../ we can return right away. */ | |
599 | if ( | |
600 | nm[0] == '/' | |
601 | #ifdef VMS | |
602 | || index (nm, ':') | |
603 | #endif /* VMS */ | |
604 | ) | |
605 | { | |
606 | p = nm; | |
607 | lose = 0; | |
608 | while (*p) | |
609 | { | |
610 | if (p[0] == '/' && p[1] == '/' | |
611 | #ifdef APOLLO | |
612 | /* // at start of filename is meaningful on Apollo system */ | |
613 | && nm != p | |
614 | #endif /* APOLLO */ | |
615 | ) | |
616 | nm = p + 1; | |
617 | if (p[0] == '/' && p[1] == '~') | |
618 | nm = p + 1, lose = 1; | |
619 | if (p[0] == '/' && p[1] == '.' | |
620 | && (p[2] == '/' || p[2] == 0 | |
621 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
622 | lose = 1; | |
623 | #ifdef VMS | |
624 | if (p[0] == '\\') | |
625 | lose = 1; | |
626 | if (p[0] == '/') { | |
627 | /* if dev:[dir]/, move nm to / */ | |
628 | if (!slash && p > nm && (brack || colon)) { | |
629 | nm = (brack ? brack + 1 : colon + 1); | |
630 | lbrack = rbrack = 0; | |
631 | brack = 0; | |
632 | colon = 0; | |
633 | } | |
634 | slash = p; | |
635 | } | |
636 | if (p[0] == '-') | |
637 | #ifndef VMS4_4 | |
638 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
639 | if (lbrack == rbrack) | |
640 | { | |
641 | if (dots < 2) /* this is to allow negative version numbers */ | |
642 | p[0] = '_'; | |
643 | } | |
644 | else | |
645 | #endif /* VMS4_4 */ | |
646 | if (lbrack > rbrack && | |
647 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
648 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
649 | lose = 1; | |
650 | #ifndef VMS4_4 | |
651 | else | |
652 | p[0] = '_'; | |
653 | #endif /* VMS4_4 */ | |
654 | /* count open brackets, reset close bracket pointer */ | |
655 | if (p[0] == '[' || p[0] == '<') | |
656 | lbrack++, brack = 0; | |
657 | /* count close brackets, set close bracket pointer */ | |
658 | if (p[0] == ']' || p[0] == '>') | |
659 | rbrack++, brack = p; | |
660 | /* detect ][ or >< */ | |
661 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
662 | lose = 1; | |
663 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
664 | nm = p + 1, lose = 1; | |
665 | if (p[0] == ':' && (colon || slash)) | |
666 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
667 | if (brack) | |
668 | { | |
669 | nm = brack + 1; | |
670 | brack = 0; | |
671 | } | |
672 | /* if /pathname/dev:, move nm to dev: */ | |
673 | else if (slash) | |
674 | nm = slash + 1; | |
675 | /* if node::dev:, move colon following dev */ | |
676 | else if (colon && colon[-1] == ':') | |
677 | colon = p; | |
678 | /* if dev1:dev2:, move nm to dev2: */ | |
679 | else if (colon && colon[-1] != ':') | |
680 | { | |
681 | nm = colon + 1; | |
682 | colon = 0; | |
683 | } | |
684 | if (p[0] == ':' && !colon) | |
685 | { | |
686 | if (p[1] == ':') | |
687 | p++; | |
688 | colon = p; | |
689 | } | |
690 | if (lbrack == rbrack) | |
691 | if (p[0] == ';') | |
692 | dots = 2; | |
693 | else if (p[0] == '.') | |
694 | dots++; | |
695 | #endif /* VMS */ | |
696 | p++; | |
697 | } | |
698 | if (!lose) | |
699 | { | |
700 | #ifdef VMS | |
701 | if (index (nm, '/')) | |
702 | return build_string (sys_translate_unix (nm)); | |
703 | #endif /* VMS */ | |
704 | if (nm == XSTRING (name)->data) | |
705 | return name; | |
706 | return build_string (nm); | |
707 | } | |
708 | } | |
709 | ||
710 | /* Now determine directory to start with and put it in newdir */ | |
711 | ||
712 | newdir = 0; | |
713 | ||
714 | if (nm[0] == '~') /* prefix ~ */ | |
715 | if (nm[1] == '/' | |
716 | #ifdef VMS | |
717 | || nm[1] == ':' | |
718 | #endif /* VMS */ | |
e5d77022 | 719 | || nm[1] == 0)/* ~ by itself */ |
570d7624 JB |
720 | { |
721 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
722 | newdir = (unsigned char *) ""; | |
723 | nm++; | |
724 | #ifdef VMS | |
725 | nm++; /* Don't leave the slash in nm. */ | |
726 | #endif /* VMS */ | |
727 | } | |
728 | else /* ~user/filename */ | |
729 | { | |
730 | for (p = nm; *p && (*p != '/' | |
731 | #ifdef VMS | |
732 | && *p != ':' | |
733 | #endif /* VMS */ | |
734 | ); p++); | |
735 | o = (unsigned char *) alloca (p - nm + 1); | |
736 | bcopy ((char *) nm, o, p - nm); | |
737 | o [p - nm] = 0; | |
738 | ||
739 | pw = (struct passwd *) getpwnam (o + 1); | |
e5d77022 JB |
740 | if (pw) |
741 | { | |
742 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 743 | #ifdef VMS |
e5d77022 | 744 | nm = p + 1; /* skip the terminator */ |
570d7624 | 745 | #else |
e5d77022 | 746 | nm = p; |
570d7624 | 747 | #endif /* VMS */ |
e5d77022 JB |
748 | } |
749 | ||
750 | /* If we don't find a user of that name, leave the name | |
751 | unchanged; don't move nm forward to p. */ | |
570d7624 JB |
752 | } |
753 | ||
754 | if (nm[0] != '/' | |
755 | #ifdef VMS | |
756 | && !index (nm, ':') | |
757 | #endif /* not VMS */ | |
758 | && !newdir) | |
759 | { | |
265a9e55 | 760 | if (NILP (defalt)) |
570d7624 JB |
761 | defalt = current_buffer->directory; |
762 | CHECK_STRING (defalt, 1); | |
763 | newdir = XSTRING (defalt)->data; | |
764 | } | |
765 | ||
bfb61299 JB |
766 | if (newdir != 0) |
767 | { | |
768 | /* Get rid of any slash at the end of newdir. */ | |
769 | int length = strlen (newdir); | |
770 | if (newdir[length - 1] == '/') | |
771 | { | |
772 | unsigned char *temp = (unsigned char *) alloca (length); | |
773 | bcopy (newdir, temp, length - 1); | |
774 | temp[length - 1] = 0; | |
775 | newdir = temp; | |
776 | } | |
777 | tlen = length + 1; | |
778 | } | |
779 | else | |
780 | tlen = 0; | |
570d7624 | 781 | |
bfb61299 JB |
782 | /* Now concatenate the directory and name to new space in the stack frame */ |
783 | tlen += strlen (nm) + 1; | |
570d7624 JB |
784 | target = (unsigned char *) alloca (tlen); |
785 | *target = 0; | |
786 | ||
787 | if (newdir) | |
788 | { | |
789 | #ifndef VMS | |
790 | if (nm[0] == 0 || nm[0] == '/') | |
791 | strcpy (target, newdir); | |
792 | else | |
793 | #endif | |
794 | file_name_as_directory (target, newdir); | |
795 | } | |
796 | ||
797 | strcat (target, nm); | |
798 | #ifdef VMS | |
799 | if (index (target, '/')) | |
800 | strcpy (target, sys_translate_unix (target)); | |
801 | #endif /* VMS */ | |
802 | ||
803 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
804 | ||
805 | p = target; | |
806 | o = target; | |
807 | ||
808 | while (*p) | |
809 | { | |
810 | #ifdef VMS | |
811 | if (*p != ']' && *p != '>' && *p != '-') | |
812 | { | |
813 | if (*p == '\\') | |
814 | p++; | |
815 | *o++ = *p++; | |
816 | } | |
817 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
818 | /* brackets are offset from each other by 2 */ | |
819 | { | |
820 | p += 2; | |
821 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
822 | /* convert [foo][bar] to [bar] */ | |
823 | while (o[-1] != '[' && o[-1] != '<') | |
824 | o--; | |
825 | else if (*p == '-' && *o != '.') | |
826 | *--p = '.'; | |
827 | } | |
828 | else if (p[0] == '-' && o[-1] == '.' && | |
829 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
830 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
831 | { | |
832 | do | |
833 | o--; | |
834 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
835 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
836 | p += 2; | |
837 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
838 | p++, o--; | |
839 | /* else [foo.-] ==> [-] */ | |
840 | } | |
841 | else | |
842 | { | |
843 | #ifndef VMS4_4 | |
844 | if (*p == '-' && | |
845 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
846 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
847 | *p = '_'; | |
848 | #endif /* VMS4_4 */ | |
849 | *o++ = *p++; | |
850 | } | |
851 | #else /* not VMS */ | |
852 | if (*p != '/') | |
853 | { | |
854 | *o++ = *p++; | |
855 | } | |
856 | else if (!strncmp (p, "//", 2) | |
857 | #ifdef APOLLO | |
858 | /* // at start of filename is meaningful in Apollo system */ | |
859 | && o != target | |
860 | #endif /* APOLLO */ | |
861 | ) | |
862 | { | |
863 | o = target; | |
864 | p++; | |
865 | } | |
866 | else if (p[0] == '/' && p[1] == '.' && | |
867 | (p[2] == '/' || p[2] == 0)) | |
868 | p += 2; | |
869 | else if (!strncmp (p, "/..", 3) | |
870 | /* `/../' is the "superroot" on certain file systems. */ | |
871 | && o != target | |
872 | && (p[3] == '/' || p[3] == 0)) | |
873 | { | |
874 | while (o != target && *--o != '/') | |
875 | ; | |
876 | #ifdef APOLLO | |
877 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
878 | ++o; | |
879 | else | |
880 | #endif /* APOLLO */ | |
881 | if (o == target && *o == '/') | |
882 | ++o; | |
883 | p += 3; | |
884 | } | |
885 | else | |
886 | { | |
887 | *o++ = *p++; | |
888 | } | |
889 | #endif /* not VMS */ | |
890 | } | |
891 | ||
892 | return make_string (target, o - target); | |
893 | } | |
894 | #if 0 | |
e5d77022 JB |
895 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. |
896 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
570d7624 JB |
897 | "Convert FILENAME to absolute, and canonicalize it.\n\ |
898 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
899 | (does not start with slash); if DEFAULT is nil or missing,\n\ | |
900 | the current buffer's value of default-directory is used.\n\ | |
901 | Filenames containing `.' or `..' as components are simplified;\n\ | |
902 | initial `~/' expands to your home directory.\n\ | |
903 | See also the function `substitute-in-file-name'.") | |
904 | (name, defalt) | |
905 | Lisp_Object name, defalt; | |
906 | { | |
907 | unsigned char *nm; | |
908 | ||
909 | register unsigned char *newdir, *p, *o; | |
910 | int tlen; | |
911 | unsigned char *target; | |
912 | struct passwd *pw; | |
913 | int lose; | |
914 | #ifdef VMS | |
915 | unsigned char * colon = 0; | |
916 | unsigned char * close = 0; | |
917 | unsigned char * slash = 0; | |
918 | unsigned char * brack = 0; | |
919 | int lbrack = 0, rbrack = 0; | |
920 | int dots = 0; | |
921 | #endif /* VMS */ | |
922 | ||
923 | CHECK_STRING (name, 0); | |
924 | ||
925 | #ifdef VMS | |
926 | /* Filenames on VMS are always upper case. */ | |
927 | name = Fupcase (name); | |
928 | #endif | |
929 | ||
930 | nm = XSTRING (name)->data; | |
931 | ||
932 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
933 | If no /./ or /../ we can return right away. */ | |
934 | if ( | |
935 | nm[0] == '/' | |
936 | #ifdef VMS | |
937 | || index (nm, ':') | |
938 | #endif /* VMS */ | |
939 | ) | |
940 | { | |
941 | p = nm; | |
942 | lose = 0; | |
943 | while (*p) | |
944 | { | |
945 | if (p[0] == '/' && p[1] == '/' | |
946 | #ifdef APOLLO | |
947 | /* // at start of filename is meaningful on Apollo system */ | |
948 | && nm != p | |
949 | #endif /* APOLLO */ | |
950 | ) | |
951 | nm = p + 1; | |
952 | if (p[0] == '/' && p[1] == '~') | |
953 | nm = p + 1, lose = 1; | |
954 | if (p[0] == '/' && p[1] == '.' | |
955 | && (p[2] == '/' || p[2] == 0 | |
956 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
957 | lose = 1; | |
958 | #ifdef VMS | |
959 | if (p[0] == '\\') | |
960 | lose = 1; | |
961 | if (p[0] == '/') { | |
962 | /* if dev:[dir]/, move nm to / */ | |
963 | if (!slash && p > nm && (brack || colon)) { | |
964 | nm = (brack ? brack + 1 : colon + 1); | |
965 | lbrack = rbrack = 0; | |
966 | brack = 0; | |
967 | colon = 0; | |
968 | } | |
969 | slash = p; | |
970 | } | |
971 | if (p[0] == '-') | |
972 | #ifndef VMS4_4 | |
973 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
974 | if (lbrack == rbrack) | |
975 | { | |
976 | if (dots < 2) /* this is to allow negative version numbers */ | |
977 | p[0] = '_'; | |
978 | } | |
979 | else | |
980 | #endif /* VMS4_4 */ | |
981 | if (lbrack > rbrack && | |
982 | ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') && | |
983 | (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
984 | lose = 1; | |
985 | #ifndef VMS4_4 | |
986 | else | |
987 | p[0] = '_'; | |
988 | #endif /* VMS4_4 */ | |
989 | /* count open brackets, reset close bracket pointer */ | |
990 | if (p[0] == '[' || p[0] == '<') | |
991 | lbrack++, brack = 0; | |
992 | /* count close brackets, set close bracket pointer */ | |
993 | if (p[0] == ']' || p[0] == '>') | |
994 | rbrack++, brack = p; | |
995 | /* detect ][ or >< */ | |
996 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
997 | lose = 1; | |
998 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
999 | nm = p + 1, lose = 1; | |
1000 | if (p[0] == ':' && (colon || slash)) | |
1001 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1002 | if (brack) | |
1003 | { | |
1004 | nm = brack + 1; | |
1005 | brack = 0; | |
1006 | } | |
1007 | /* if /pathname/dev:, move nm to dev: */ | |
1008 | else if (slash) | |
1009 | nm = slash + 1; | |
1010 | /* if node::dev:, move colon following dev */ | |
1011 | else if (colon && colon[-1] == ':') | |
1012 | colon = p; | |
1013 | /* if dev1:dev2:, move nm to dev2: */ | |
1014 | else if (colon && colon[-1] != ':') | |
1015 | { | |
1016 | nm = colon + 1; | |
1017 | colon = 0; | |
1018 | } | |
1019 | if (p[0] == ':' && !colon) | |
1020 | { | |
1021 | if (p[1] == ':') | |
1022 | p++; | |
1023 | colon = p; | |
1024 | } | |
1025 | if (lbrack == rbrack) | |
1026 | if (p[0] == ';') | |
1027 | dots = 2; | |
1028 | else if (p[0] == '.') | |
1029 | dots++; | |
1030 | #endif /* VMS */ | |
1031 | p++; | |
1032 | } | |
1033 | if (!lose) | |
1034 | { | |
1035 | #ifdef VMS | |
1036 | if (index (nm, '/')) | |
1037 | return build_string (sys_translate_unix (nm)); | |
1038 | #endif /* VMS */ | |
1039 | if (nm == XSTRING (name)->data) | |
1040 | return name; | |
1041 | return build_string (nm); | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | /* Now determine directory to start with and put it in NEWDIR */ | |
1046 | ||
1047 | newdir = 0; | |
1048 | ||
1049 | if (nm[0] == '~') /* prefix ~ */ | |
1050 | if (nm[1] == '/' | |
1051 | #ifdef VMS | |
1052 | || nm[1] == ':' | |
1053 | #endif /* VMS */ | |
1054 | || nm[1] == 0)/* ~/filename */ | |
1055 | { | |
1056 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1057 | newdir = (unsigned char *) ""; | |
1058 | nm++; | |
1059 | #ifdef VMS | |
1060 | nm++; /* Don't leave the slash in nm. */ | |
1061 | #endif /* VMS */ | |
1062 | } | |
1063 | else /* ~user/filename */ | |
1064 | { | |
1065 | /* Get past ~ to user */ | |
1066 | unsigned char *user = nm + 1; | |
1067 | /* Find end of name. */ | |
1068 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1069 | int len = ptr ? ptr - user : strlen (user); | |
1070 | #ifdef VMS | |
1071 | unsigned char *ptr1 = index (user, ':'); | |
1072 | if (ptr1 != 0 && ptr1 - user < len) | |
1073 | len = ptr1 - user; | |
1074 | #endif /* VMS */ | |
1075 | /* Copy the user name into temp storage. */ | |
1076 | o = (unsigned char *) alloca (len + 1); | |
1077 | bcopy ((char *) user, o, len); | |
1078 | o[len] = 0; | |
1079 | ||
1080 | /* Look up the user name. */ | |
1081 | pw = (struct passwd *) getpwnam (o + 1); | |
1082 | if (!pw) | |
1083 | error ("\"%s\" isn't a registered user", o + 1); | |
1084 | ||
1085 | newdir = (unsigned char *) pw->pw_dir; | |
1086 | ||
1087 | /* Discard the user name from NM. */ | |
1088 | nm += len; | |
1089 | } | |
1090 | ||
1091 | if (nm[0] != '/' | |
1092 | #ifdef VMS | |
1093 | && !index (nm, ':') | |
1094 | #endif /* not VMS */ | |
1095 | && !newdir) | |
1096 | { | |
265a9e55 | 1097 | if (NILP (defalt)) |
570d7624 JB |
1098 | defalt = current_buffer->directory; |
1099 | CHECK_STRING (defalt, 1); | |
1100 | newdir = XSTRING (defalt)->data; | |
1101 | } | |
1102 | ||
1103 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1104 | ||
1105 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1106 | target = (unsigned char *) alloca (tlen); | |
1107 | *target = 0; | |
1108 | ||
1109 | if (newdir) | |
1110 | { | |
1111 | #ifndef VMS | |
1112 | if (nm[0] == 0 || nm[0] == '/') | |
1113 | strcpy (target, newdir); | |
1114 | else | |
1115 | #endif | |
1116 | file_name_as_directory (target, newdir); | |
1117 | } | |
1118 | ||
1119 | strcat (target, nm); | |
1120 | #ifdef VMS | |
1121 | if (index (target, '/')) | |
1122 | strcpy (target, sys_translate_unix (target)); | |
1123 | #endif /* VMS */ | |
1124 | ||
1125 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1126 | ||
1127 | p = target; | |
1128 | o = target; | |
1129 | ||
1130 | while (*p) | |
1131 | { | |
1132 | #ifdef VMS | |
1133 | if (*p != ']' && *p != '>' && *p != '-') | |
1134 | { | |
1135 | if (*p == '\\') | |
1136 | p++; | |
1137 | *o++ = *p++; | |
1138 | } | |
1139 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1140 | /* brackets are offset from each other by 2 */ | |
1141 | { | |
1142 | p += 2; | |
1143 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1144 | /* convert [foo][bar] to [bar] */ | |
1145 | while (o[-1] != '[' && o[-1] != '<') | |
1146 | o--; | |
1147 | else if (*p == '-' && *o != '.') | |
1148 | *--p = '.'; | |
1149 | } | |
1150 | else if (p[0] == '-' && o[-1] == '.' && | |
1151 | (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
1152 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ | |
1153 | { | |
1154 | do | |
1155 | o--; | |
1156 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
1157 | if (p[1] == '.') /* foo.-.bar ==> bar*/ | |
1158 | p += 2; | |
1159 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1160 | p++, o--; | |
1161 | /* else [foo.-] ==> [-] */ | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | #ifndef VMS4_4 | |
1166 | if (*p == '-' && | |
1167 | o[-1] != '[' && o[-1] != '<' && o[-1] != '.' && | |
1168 | p[1] != ']' && p[1] != '>' && p[1] != '.') | |
1169 | *p = '_'; | |
1170 | #endif /* VMS4_4 */ | |
1171 | *o++ = *p++; | |
1172 | } | |
1173 | #else /* not VMS */ | |
1174 | if (*p != '/') | |
1175 | { | |
1176 | *o++ = *p++; | |
1177 | } | |
1178 | else if (!strncmp (p, "//", 2) | |
1179 | #ifdef APOLLO | |
1180 | /* // at start of filename is meaningful in Apollo system */ | |
1181 | && o != target | |
1182 | #endif /* APOLLO */ | |
1183 | ) | |
1184 | { | |
1185 | o = target; | |
1186 | p++; | |
1187 | } | |
1188 | else if (p[0] == '/' && p[1] == '.' && | |
1189 | (p[2] == '/' || p[2] == 0)) | |
1190 | p += 2; | |
1191 | else if (!strncmp (p, "/..", 3) | |
1192 | /* `/../' is the "superroot" on certain file systems. */ | |
1193 | && o != target | |
1194 | && (p[3] == '/' || p[3] == 0)) | |
1195 | { | |
1196 | while (o != target && *--o != '/') | |
1197 | ; | |
1198 | #ifdef APOLLO | |
1199 | if (o == target + 1 && o[-1] == '/' && o[0] == '/') | |
1200 | ++o; | |
1201 | else | |
1202 | #endif /* APOLLO */ | |
1203 | if (o == target && *o == '/') | |
1204 | ++o; | |
1205 | p += 3; | |
1206 | } | |
1207 | else | |
1208 | { | |
1209 | *o++ = *p++; | |
1210 | } | |
1211 | #endif /* not VMS */ | |
1212 | } | |
1213 | ||
1214 | return make_string (target, o - target); | |
1215 | } | |
1216 | #endif | |
1217 | \f | |
1218 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, | |
1219 | Ssubstitute_in_file_name, 1, 1, 0, | |
1220 | "Substitute environment variables referred to in FILENAME.\n\ | |
1221 | `$FOO' where FOO is an environment variable name means to substitute\n\ | |
1222 | the value of that variable. The variable name should be terminated\n\ | |
1223 | with a character not a letter, digit or underscore; otherwise, enclose\n\ | |
1224 | the entire variable name in braces.\n\ | |
1225 | If `/~' appears, all of FILENAME through that `/' is discarded.\n\n\ | |
1226 | On VMS, `$' substitution is not done; this function does little and only\n\ | |
1227 | duplicates what `expand-file-name' does.") | |
1228 | (string) | |
1229 | Lisp_Object string; | |
1230 | { | |
1231 | unsigned char *nm; | |
1232 | ||
1233 | register unsigned char *s, *p, *o, *x, *endp; | |
1234 | unsigned char *target; | |
1235 | int total = 0; | |
1236 | int substituted = 0; | |
1237 | unsigned char *xnm; | |
1238 | ||
1239 | CHECK_STRING (string, 0); | |
1240 | ||
1241 | nm = XSTRING (string)->data; | |
1242 | endp = nm + XSTRING (string)->size; | |
1243 | ||
1244 | /* If /~ or // appears, discard everything through first slash. */ | |
1245 | ||
1246 | for (p = nm; p != endp; p++) | |
1247 | { | |
1248 | if ((p[0] == '~' || | |
1249 | #ifdef APOLLO | |
1250 | /* // at start of file name is meaningful in Apollo system */ | |
1251 | (p[0] == '/' && p - 1 != nm) | |
1252 | #else /* not APOLLO */ | |
1253 | p[0] == '/' | |
1254 | #endif /* not APOLLO */ | |
1255 | ) | |
1256 | && p != nm && | |
1257 | #ifdef VMS | |
1258 | (p[-1] == ':' || p[-1] == ']' || p[-1] == '>' || | |
1259 | #endif /* VMS */ | |
1260 | p[-1] == '/') | |
1261 | #ifdef VMS | |
1262 | ) | |
1263 | #endif /* VMS */ | |
1264 | { | |
1265 | nm = p; | |
1266 | substituted = 1; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | #ifdef VMS | |
1271 | return build_string (nm); | |
1272 | #else | |
1273 | ||
1274 | /* See if any variables are substituted into the string | |
1275 | and find the total length of their values in `total' */ | |
1276 | ||
1277 | for (p = nm; p != endp;) | |
1278 | if (*p != '$') | |
1279 | p++; | |
1280 | else | |
1281 | { | |
1282 | p++; | |
1283 | if (p == endp) | |
1284 | goto badsubst; | |
1285 | else if (*p == '$') | |
1286 | { | |
1287 | /* "$$" means a single "$" */ | |
1288 | p++; | |
1289 | total -= 1; | |
1290 | substituted = 1; | |
1291 | continue; | |
1292 | } | |
1293 | else if (*p == '{') | |
1294 | { | |
1295 | o = ++p; | |
1296 | while (p != endp && *p != '}') p++; | |
1297 | if (*p != '}') goto missingclose; | |
1298 | s = p; | |
1299 | } | |
1300 | else | |
1301 | { | |
1302 | o = p; | |
1303 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1304 | s = p; | |
1305 | } | |
1306 | ||
1307 | /* Copy out the variable name */ | |
1308 | target = (unsigned char *) alloca (s - o + 1); | |
1309 | strncpy (target, o, s - o); | |
1310 | target[s - o] = 0; | |
1311 | ||
1312 | /* Get variable value */ | |
1313 | o = (unsigned char *) egetenv (target); | |
1314 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1315 | #if 0 | |
1316 | #ifdef USG | |
1317 | if (!o && !strcmp (target, "USER")) | |
1318 | o = egetenv ("LOGNAME"); | |
1319 | #endif /* USG */ | |
1320 | #endif /* 0 */ | |
1321 | if (!o) goto badvar; | |
1322 | total += strlen (o); | |
1323 | substituted = 1; | |
1324 | } | |
1325 | ||
1326 | if (!substituted) | |
1327 | return string; | |
1328 | ||
1329 | /* If substitution required, recopy the string and do it */ | |
1330 | /* Make space in stack frame for the new copy */ | |
1331 | xnm = (unsigned char *) alloca (XSTRING (string)->size + total + 1); | |
1332 | x = xnm; | |
1333 | ||
1334 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1335 | for (p = nm; *p;) | |
1336 | if (*p != '$') | |
1337 | *x++ = *p++; | |
1338 | else | |
1339 | { | |
1340 | p++; | |
1341 | if (p == endp) | |
1342 | goto badsubst; | |
1343 | else if (*p == '$') | |
1344 | { | |
1345 | *x++ = *p++; | |
1346 | continue; | |
1347 | } | |
1348 | else if (*p == '{') | |
1349 | { | |
1350 | o = ++p; | |
1351 | while (p != endp && *p != '}') p++; | |
1352 | if (*p != '}') goto missingclose; | |
1353 | s = p++; | |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | o = p; | |
1358 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1359 | s = p; | |
1360 | } | |
1361 | ||
1362 | /* Copy out the variable name */ | |
1363 | target = (unsigned char *) alloca (s - o + 1); | |
1364 | strncpy (target, o, s - o); | |
1365 | target[s - o] = 0; | |
1366 | ||
1367 | /* Get variable value */ | |
1368 | o = (unsigned char *) egetenv (target); | |
1369 | /* The presence of this code makes vax 5.0 crash, for reasons yet unknown */ | |
1370 | #if 0 | |
1371 | #ifdef USG | |
1372 | if (!o && !strcmp (target, "USER")) | |
1373 | o = egetenv ("LOGNAME"); | |
1374 | #endif /* USG */ | |
1375 | #endif /* 0 */ | |
1376 | if (!o) | |
1377 | goto badvar; | |
1378 | ||
1379 | strcpy (x, o); | |
1380 | x += strlen (o); | |
1381 | } | |
1382 | ||
1383 | *x = 0; | |
1384 | ||
1385 | /* If /~ or // appears, discard everything through first slash. */ | |
1386 | ||
1387 | for (p = xnm; p != x; p++) | |
1388 | if ((p[0] == '~' || | |
1389 | #ifdef APOLLO | |
1390 | /* // at start of file name is meaningful in Apollo system */ | |
1391 | (p[0] == '/' && p - 1 != xnm) | |
1392 | #else /* not APOLLO */ | |
1393 | p[0] == '/' | |
1394 | #endif /* not APOLLO */ | |
1395 | ) | |
1396 | && p != nm && p[-1] == '/') | |
1397 | xnm = p; | |
1398 | ||
1399 | return make_string (xnm, x - xnm); | |
1400 | ||
1401 | badsubst: | |
1402 | error ("Bad format environment-variable substitution"); | |
1403 | missingclose: | |
1404 | error ("Missing \"}\" in environment-variable substitution"); | |
1405 | badvar: | |
1406 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1407 | ||
1408 | /* NOTREACHED */ | |
1409 | #endif /* not VMS */ | |
1410 | } | |
1411 | \f | |
067ffa38 JB |
1412 | /* A slightly faster and more convenient way to get |
1413 | (directory-file-name (expand-file-name FOO)). The return value may | |
1414 | have had its last character zapped with a '\0' character, meaning | |
1415 | that it is acceptable to system calls, but not to other lisp | |
1416 | functions. Callers should make sure that the return value doesn't | |
1417 | escape. */ | |
1418 | ||
570d7624 JB |
1419 | Lisp_Object |
1420 | expand_and_dir_to_file (filename, defdir) | |
1421 | Lisp_Object filename, defdir; | |
1422 | { | |
1423 | register Lisp_Object abspath; | |
1424 | ||
1425 | abspath = Fexpand_file_name (filename, defdir); | |
1426 | #ifdef VMS | |
1427 | { | |
1428 | register int c = XSTRING (abspath)->data[XSTRING (abspath)->size - 1]; | |
1429 | if (c == ':' || c == ']' || c == '>') | |
1430 | abspath = Fdirectory_file_name (abspath); | |
1431 | } | |
1432 | #else | |
1433 | /* Remove final slash, if any (unless path is root). | |
1434 | stat behaves differently depending! */ | |
1435 | if (XSTRING (abspath)->size > 1 | |
1436 | && XSTRING (abspath)->data[XSTRING (abspath)->size - 1] == '/') | |
1437 | { | |
1438 | if (EQ (abspath, filename)) | |
1439 | abspath = Fcopy_sequence (abspath); | |
1440 | XSTRING (abspath)->data[XSTRING (abspath)->size - 1] = 0; | |
1441 | } | |
1442 | #endif | |
1443 | return abspath; | |
1444 | } | |
1445 | \f | |
1446 | barf_or_query_if_file_exists (absname, querystring, interactive) | |
1447 | Lisp_Object absname; | |
1448 | unsigned char *querystring; | |
1449 | int interactive; | |
1450 | { | |
1451 | register Lisp_Object tem; | |
1452 | struct gcpro gcpro1; | |
1453 | ||
1454 | if (access (XSTRING (absname)->data, 4) >= 0) | |
1455 | { | |
1456 | if (! interactive) | |
1457 | Fsignal (Qfile_already_exists, | |
1458 | Fcons (build_string ("File already exists"), | |
1459 | Fcons (absname, Qnil))); | |
1460 | GCPRO1 (absname); | |
1461 | tem = do_yes_or_no_p (format1 ("File %s already exists; %s anyway? ", | |
1462 | XSTRING (absname)->data, querystring)); | |
1463 | UNGCPRO; | |
265a9e55 | 1464 | if (NILP (tem)) |
570d7624 JB |
1465 | Fsignal (Qfile_already_exists, |
1466 | Fcons (build_string ("File already exists"), | |
1467 | Fcons (absname, Qnil))); | |
1468 | } | |
1469 | return; | |
1470 | } | |
1471 | ||
1472 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 4, | |
349a7710 | 1473 | "fCopy file: \nFCopy %s to file: \np\nP", |
570d7624 JB |
1474 | "Copy FILE to NEWNAME. Both args must be strings.\n\ |
1475 | Signals a `file-already-exists' error if file NEWNAME already exists,\n\ | |
1476 | unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.\n\ | |
1477 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1478 | This is what happens in interactive use with M-x.\n\ | |
349a7710 JB |
1479 | Fourth arg KEEP-TIME non-nil means give the new file the same\n\ |
1480 | last-modified time as the old one. (This works on only some systems.)\n\ | |
1481 | A prefix arg makes KEEP-TIME non-nil.") | |
570d7624 JB |
1482 | (filename, newname, ok_if_already_exists, keep_date) |
1483 | Lisp_Object filename, newname, ok_if_already_exists, keep_date; | |
1484 | { | |
1485 | int ifd, ofd, n; | |
1486 | char buf[16 * 1024]; | |
1487 | struct stat st; | |
32f4334d | 1488 | Lisp_Object handler; |
570d7624 | 1489 | struct gcpro gcpro1, gcpro2; |
b5148e85 | 1490 | int count = specpdl_ptr - specpdl; |
570d7624 JB |
1491 | |
1492 | GCPRO2 (filename, newname); | |
1493 | CHECK_STRING (filename, 0); | |
1494 | CHECK_STRING (newname, 1); | |
1495 | filename = Fexpand_file_name (filename, Qnil); | |
1496 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d | 1497 | |
0bf2eed2 | 1498 | /* If the input file name has special constructs in it, |
32f4334d RS |
1499 | call the corresponding file handler. */ |
1500 | handler = find_file_handler (filename); | |
0bf2eed2 RS |
1501 | if (!NILP (handler)) |
1502 | return call3 (handler, Qcopy_file, filename, newname); | |
1503 | /* Likewise for output file name. */ | |
1504 | handler = find_file_handler (newname); | |
32f4334d RS |
1505 | if (!NILP (handler)) |
1506 | return call3 (handler, Qcopy_file, filename, newname); | |
1507 | ||
265a9e55 | 1508 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1509 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1510 | barf_or_query_if_file_exists (newname, "copy to it", | |
1511 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1512 | ||
1513 | ifd = open (XSTRING (filename)->data, 0); | |
1514 | if (ifd < 0) | |
1515 | report_file_error ("Opening input file", Fcons (filename, Qnil)); | |
1516 | ||
b5148e85 RS |
1517 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1518 | ||
570d7624 JB |
1519 | #ifdef VMS |
1520 | /* Create the copy file with the same record format as the input file */ | |
1521 | ofd = sys_creat (XSTRING (newname)->data, 0666, ifd); | |
1522 | #else | |
1523 | ofd = creat (XSTRING (newname)->data, 0666); | |
1524 | #endif /* VMS */ | |
1525 | if (ofd < 0) | |
66331187 | 1526 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1527 | |
1528 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1529 | |
b5148e85 RS |
1530 | immediate_quit = 1; |
1531 | QUIT; | |
570d7624 JB |
1532 | while ((n = read (ifd, buf, sizeof buf)) > 0) |
1533 | if (write (ofd, buf, n) != n) | |
66331187 | 1534 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1535 | immediate_quit = 0; |
570d7624 JB |
1536 | |
1537 | if (fstat (ifd, &st) >= 0) | |
1538 | { | |
265a9e55 | 1539 | if (!NILP (keep_date)) |
570d7624 | 1540 | { |
de5bf5d3 JB |
1541 | EMACS_TIME atime, mtime; |
1542 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1543 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
1544 | EMACS_SET_UTIMES (XSTRING (newname)->data, atime, mtime); | |
570d7624 | 1545 | } |
570d7624 JB |
1546 | #ifdef APOLLO |
1547 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
1548 | #endif | |
de5bf5d3 | 1549 | chmod (XSTRING (newname)->data, st.st_mode & 07777); |
570d7624 JB |
1550 | } |
1551 | ||
b5148e85 RS |
1552 | /* Discard the unwind protects. */ |
1553 | specpdl_ptr = specpdl + count; | |
1554 | ||
570d7624 JB |
1555 | close (ifd); |
1556 | if (close (ofd) < 0) | |
1557 | report_file_error ("I/O error", Fcons (newname, Qnil)); | |
1558 | ||
1559 | UNGCPRO; | |
1560 | return Qnil; | |
1561 | } | |
1562 | ||
1563 | DEFUN ("make-directory", Fmake_directory, Smake_directory, 1, 1, "FMake directory: ", | |
1564 | "Create a directory. One argument, a file name string.") | |
1565 | (dirname) | |
1566 | Lisp_Object dirname; | |
1567 | { | |
1568 | unsigned char *dir; | |
32f4334d | 1569 | Lisp_Object handler; |
570d7624 JB |
1570 | |
1571 | CHECK_STRING (dirname, 0); | |
1572 | dirname = Fexpand_file_name (dirname, Qnil); | |
32f4334d RS |
1573 | |
1574 | handler = find_file_handler (dirname); | |
1575 | if (!NILP (handler)) | |
1576 | return call2 (handler, Qmake_directory, dirname); | |
1577 | ||
570d7624 JB |
1578 | dir = XSTRING (dirname)->data; |
1579 | ||
1580 | if (mkdir (dir, 0777) != 0) | |
1581 | report_file_error ("Creating directory", Flist (1, &dirname)); | |
1582 | ||
32f4334d | 1583 | return Qnil; |
570d7624 JB |
1584 | } |
1585 | ||
aa734e17 RS |
1586 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
1587 | "Delete a directory. One argument, a file name string.") | |
570d7624 JB |
1588 | (dirname) |
1589 | Lisp_Object dirname; | |
1590 | { | |
1591 | unsigned char *dir; | |
32f4334d | 1592 | Lisp_Object handler; |
570d7624 JB |
1593 | |
1594 | CHECK_STRING (dirname, 0); | |
1595 | dirname = Fexpand_file_name (dirname, Qnil); | |
1596 | dir = XSTRING (dirname)->data; | |
1597 | ||
32f4334d RS |
1598 | handler = find_file_handler (dirname); |
1599 | if (!NILP (handler)) | |
1600 | return call2 (handler, Qdelete_directory, dirname); | |
1601 | ||
570d7624 JB |
1602 | if (rmdir (dir) != 0) |
1603 | report_file_error ("Removing directory", Flist (1, &dirname)); | |
1604 | ||
1605 | return Qnil; | |
1606 | } | |
1607 | ||
1608 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
1609 | "Delete specified file. One argument, a file name string.\n\ | |
1610 | If file has multiple names, it continues to exist with the other names.") | |
1611 | (filename) | |
1612 | Lisp_Object filename; | |
1613 | { | |
32f4334d | 1614 | Lisp_Object handler; |
570d7624 JB |
1615 | CHECK_STRING (filename, 0); |
1616 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1617 | |
1618 | handler = find_file_handler (filename); | |
1619 | if (!NILP (handler)) | |
1620 | return call2 (handler, Qdelete_file, filename); | |
1621 | ||
570d7624 JB |
1622 | if (0 > unlink (XSTRING (filename)->data)) |
1623 | report_file_error ("Removing old name", Flist (1, &filename)); | |
1624 | return Qnil; | |
1625 | } | |
1626 | ||
1627 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, | |
1628 | "fRename file: \nFRename %s to file: \np", | |
1629 | "Rename FILE as NEWNAME. Both args strings.\n\ | |
1630 | If file has names other than FILE, it continues to have those names.\n\ | |
1631 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1632 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1633 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1634 | This is what happens in interactive use with M-x.") | |
1635 | (filename, newname, ok_if_already_exists) | |
1636 | Lisp_Object filename, newname, ok_if_already_exists; | |
1637 | { | |
1638 | #ifdef NO_ARG_ARRAY | |
1639 | Lisp_Object args[2]; | |
1640 | #endif | |
32f4334d | 1641 | Lisp_Object handler; |
570d7624 JB |
1642 | struct gcpro gcpro1, gcpro2; |
1643 | ||
1644 | GCPRO2 (filename, newname); | |
1645 | CHECK_STRING (filename, 0); | |
1646 | CHECK_STRING (newname, 1); | |
1647 | filename = Fexpand_file_name (filename, Qnil); | |
1648 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1649 | |
1650 | /* If the file name has special constructs in it, | |
1651 | call the corresponding file handler. */ | |
1652 | handler = find_file_handler (filename); | |
1653 | if (!NILP (handler)) | |
1654 | return call3 (handler, Qrename_file, filename, newname); | |
1655 | ||
265a9e55 | 1656 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1657 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1658 | barf_or_query_if_file_exists (newname, "rename to it", | |
1659 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1660 | #ifndef BSD4_1 | |
1661 | if (0 > rename (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1662 | #else | |
1663 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data) | |
1664 | || 0 > unlink (XSTRING (filename)->data)) | |
1665 | #endif | |
1666 | { | |
1667 | if (errno == EXDEV) | |
1668 | { | |
1669 | Fcopy_file (filename, newname, ok_if_already_exists, Qt); | |
1670 | Fdelete_file (filename); | |
1671 | } | |
1672 | else | |
1673 | #ifdef NO_ARG_ARRAY | |
1674 | { | |
1675 | args[0] = filename; | |
1676 | args[1] = newname; | |
1677 | report_file_error ("Renaming", Flist (2, args)); | |
1678 | } | |
1679 | #else | |
1680 | report_file_error ("Renaming", Flist (2, &filename)); | |
1681 | #endif | |
1682 | } | |
1683 | UNGCPRO; | |
1684 | return Qnil; | |
1685 | } | |
1686 | ||
1687 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
1688 | "fAdd name to file: \nFName to add to %s: \np", | |
1689 | "Give FILE additional name NEWNAME. Both args strings.\n\ | |
1690 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1691 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1692 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1693 | This is what happens in interactive use with M-x.") | |
1694 | (filename, newname, ok_if_already_exists) | |
1695 | Lisp_Object filename, newname, ok_if_already_exists; | |
1696 | { | |
1697 | #ifdef NO_ARG_ARRAY | |
1698 | Lisp_Object args[2]; | |
1699 | #endif | |
32f4334d | 1700 | Lisp_Object handler; |
570d7624 JB |
1701 | struct gcpro gcpro1, gcpro2; |
1702 | ||
1703 | GCPRO2 (filename, newname); | |
1704 | CHECK_STRING (filename, 0); | |
1705 | CHECK_STRING (newname, 1); | |
1706 | filename = Fexpand_file_name (filename, Qnil); | |
1707 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
1708 | |
1709 | /* If the file name has special constructs in it, | |
1710 | call the corresponding file handler. */ | |
1711 | handler = find_file_handler (filename); | |
1712 | if (!NILP (handler)) | |
1713 | return call3 (handler, Qadd_name_to_file, filename, newname); | |
1714 | ||
265a9e55 | 1715 | if (NILP (ok_if_already_exists) |
570d7624 JB |
1716 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
1717 | barf_or_query_if_file_exists (newname, "make it a new name", | |
1718 | XTYPE (ok_if_already_exists) == Lisp_Int); | |
1719 | unlink (XSTRING (newname)->data); | |
1720 | if (0 > link (XSTRING (filename)->data, XSTRING (newname)->data)) | |
1721 | { | |
1722 | #ifdef NO_ARG_ARRAY | |
1723 | args[0] = filename; | |
1724 | args[1] = newname; | |
1725 | report_file_error ("Adding new name", Flist (2, args)); | |
1726 | #else | |
1727 | report_file_error ("Adding new name", Flist (2, &filename)); | |
1728 | #endif | |
1729 | } | |
1730 | ||
1731 | UNGCPRO; | |
1732 | return Qnil; | |
1733 | } | |
1734 | ||
1735 | #ifdef S_IFLNK | |
1736 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
1737 | "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", | |
1738 | "Make a symbolic link to FILENAME, named LINKNAME. Both args strings.\n\ | |
1739 | Signals a `file-already-exists' error if a file NEWNAME already exists\n\ | |
1740 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.\n\ | |
1741 | A number as third arg means request confirmation if NEWNAME already exists.\n\ | |
1742 | This happens for interactive use with M-x.") | |
e5d77022 JB |
1743 | (filename, linkname, ok_if_already_exists) |
1744 | Lisp_Object filename, linkname, ok_if_already_exists; | |
570d7624 JB |
1745 | { |
1746 | #ifdef NO_ARG_ARRAY | |
1747 | Lisp_Object args[2]; | |
1748 | #endif | |
32f4334d | 1749 | Lisp_Object handler; |
570d7624 JB |
1750 | struct gcpro gcpro1, gcpro2; |
1751 | ||
e5d77022 | 1752 | GCPRO2 (filename, linkname); |
570d7624 | 1753 | CHECK_STRING (filename, 0); |
e5d77022 | 1754 | CHECK_STRING (linkname, 1); |
570d7624 JB |
1755 | #if 0 /* This made it impossible to make a link to a relative name. */ |
1756 | filename = Fexpand_file_name (filename, Qnil); | |
1757 | #endif | |
e5d77022 | 1758 | linkname = Fexpand_file_name (linkname, Qnil); |
32f4334d RS |
1759 | |
1760 | /* If the file name has special constructs in it, | |
1761 | call the corresponding file handler. */ | |
1762 | handler = find_file_handler (filename); | |
1763 | if (!NILP (handler)) | |
3eac9910 | 1764 | return call3 (handler, Qmake_symbolic_link, filename, linkname); |
32f4334d | 1765 | |
265a9e55 | 1766 | if (NILP (ok_if_already_exists) |
570d7624 | 1767 | || XTYPE (ok_if_already_exists) == Lisp_Int) |
e5d77022 | 1768 | barf_or_query_if_file_exists (linkname, "make it a link", |
570d7624 | 1769 | XTYPE (ok_if_already_exists) == Lisp_Int); |
e5d77022 | 1770 | if (0 > symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1771 | { |
1772 | /* If we didn't complain already, silently delete existing file. */ | |
1773 | if (errno == EEXIST) | |
1774 | { | |
1775 | unlink (XSTRING (filename)->data); | |
e5d77022 | 1776 | if (0 <= symlink (XSTRING (filename)->data, XSTRING (linkname)->data)) |
570d7624 JB |
1777 | return Qnil; |
1778 | } | |
1779 | ||
1780 | #ifdef NO_ARG_ARRAY | |
1781 | args[0] = filename; | |
e5d77022 | 1782 | args[1] = linkname; |
570d7624 JB |
1783 | report_file_error ("Making symbolic link", Flist (2, args)); |
1784 | #else | |
1785 | report_file_error ("Making symbolic link", Flist (2, &filename)); | |
1786 | #endif | |
1787 | } | |
1788 | UNGCPRO; | |
1789 | return Qnil; | |
1790 | } | |
1791 | #endif /* S_IFLNK */ | |
1792 | ||
1793 | #ifdef VMS | |
1794 | ||
1795 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
1796 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
1797 | "Define the job-wide logical name NAME to have the value STRING.\n\ | |
1798 | If STRING is nil or a null string, the logical name NAME is deleted.") | |
1799 | (varname, string) | |
1800 | Lisp_Object varname; | |
1801 | Lisp_Object string; | |
1802 | { | |
1803 | CHECK_STRING (varname, 0); | |
265a9e55 | 1804 | if (NILP (string)) |
570d7624 JB |
1805 | delete_logical_name (XSTRING (varname)->data); |
1806 | else | |
1807 | { | |
1808 | CHECK_STRING (string, 1); | |
1809 | ||
1810 | if (XSTRING (string)->size == 0) | |
1811 | delete_logical_name (XSTRING (varname)->data); | |
1812 | else | |
1813 | define_logical_name (XSTRING (varname)->data, XSTRING (string)->data); | |
1814 | } | |
1815 | ||
1816 | return string; | |
1817 | } | |
1818 | #endif /* VMS */ | |
1819 | ||
1820 | #ifdef HPUX_NET | |
1821 | ||
1822 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
1823 | "Open a network connection to PATH using LOGIN as the login string.") | |
1824 | (path, login) | |
1825 | Lisp_Object path, login; | |
1826 | { | |
1827 | int netresult; | |
1828 | ||
1829 | CHECK_STRING (path, 0); | |
1830 | CHECK_STRING (login, 0); | |
1831 | ||
1832 | netresult = netunam (XSTRING (path)->data, XSTRING (login)->data); | |
1833 | ||
1834 | if (netresult == -1) | |
1835 | return Qnil; | |
1836 | else | |
1837 | return Qt; | |
1838 | } | |
1839 | #endif /* HPUX_NET */ | |
1840 | \f | |
1841 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
1842 | 1, 1, 0, | |
1843 | "Return t if file FILENAME specifies an absolute path name.\n\ | |
1844 | On Unix, this is a name starting with a `/' or a `~'.") | |
1845 | (filename) | |
1846 | Lisp_Object filename; | |
1847 | { | |
1848 | unsigned char *ptr; | |
1849 | ||
1850 | CHECK_STRING (filename, 0); | |
1851 | ptr = XSTRING (filename)->data; | |
1852 | if (*ptr == '/' || *ptr == '~' | |
1853 | #ifdef VMS | |
1854 | /* ??? This criterion is probably wrong for '<'. */ | |
1855 | || index (ptr, ':') || index (ptr, '<') | |
1856 | || (*ptr == '[' && (ptr[1] != '-' || (ptr[2] != '.' && ptr[2] != ']')) | |
1857 | && ptr[1] != '.') | |
1858 | #endif /* VMS */ | |
1859 | ) | |
1860 | return Qt; | |
1861 | else | |
1862 | return Qnil; | |
1863 | } | |
1864 | ||
1865 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
1866 | "Return t if file FILENAME exists. (This does not mean you can read it.)\n\ | |
1867 | See also `file-readable-p' and `file-attributes'.") | |
1868 | (filename) | |
1869 | Lisp_Object filename; | |
1870 | { | |
1871 | Lisp_Object abspath; | |
32f4334d | 1872 | Lisp_Object handler; |
570d7624 JB |
1873 | |
1874 | CHECK_STRING (filename, 0); | |
1875 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1876 | |
1877 | /* If the file name has special constructs in it, | |
1878 | call the corresponding file handler. */ | |
09121adc | 1879 | handler = find_file_handler (abspath); |
32f4334d | 1880 | if (!NILP (handler)) |
09121adc | 1881 | return call2 (handler, Qfile_exists_p, abspath); |
32f4334d | 1882 | |
570d7624 JB |
1883 | return (access (XSTRING (abspath)->data, 0) >= 0) ? Qt : Qnil; |
1884 | } | |
1885 | ||
1886 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
1887 | "Return t if FILENAME can be executed by you.\n\ | |
1888 | For directories this means you can change to that directory.") | |
1889 | (filename) | |
1890 | Lisp_Object filename; | |
1891 | ||
1892 | { | |
1893 | Lisp_Object abspath; | |
32f4334d | 1894 | Lisp_Object handler; |
570d7624 JB |
1895 | |
1896 | CHECK_STRING (filename, 0); | |
1897 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1898 | |
1899 | /* If the file name has special constructs in it, | |
1900 | call the corresponding file handler. */ | |
09121adc | 1901 | handler = find_file_handler (abspath); |
32f4334d | 1902 | if (!NILP (handler)) |
09121adc | 1903 | return call2 (handler, Qfile_executable_p, abspath); |
32f4334d | 1904 | |
570d7624 JB |
1905 | return (access (XSTRING (abspath)->data, 1) >= 0) ? Qt : Qnil; |
1906 | } | |
1907 | ||
1908 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
1909 | "Return t if file FILENAME exists and you can read it.\n\ | |
1910 | See also `file-exists-p' and `file-attributes'.") | |
1911 | (filename) | |
1912 | Lisp_Object filename; | |
1913 | { | |
1914 | Lisp_Object abspath; | |
32f4334d | 1915 | Lisp_Object handler; |
570d7624 JB |
1916 | |
1917 | CHECK_STRING (filename, 0); | |
1918 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1919 | |
1920 | /* If the file name has special constructs in it, | |
1921 | call the corresponding file handler. */ | |
09121adc | 1922 | handler = find_file_handler (abspath); |
32f4334d | 1923 | if (!NILP (handler)) |
09121adc | 1924 | return call2 (handler, Qfile_readable_p, abspath); |
32f4334d | 1925 | |
570d7624 JB |
1926 | return (access (XSTRING (abspath)->data, 4) >= 0) ? Qt : Qnil; |
1927 | } | |
1928 | ||
1929 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, | |
1930 | "If file FILENAME is the name of a symbolic link\n\ | |
1931 | returns the name of the file to which it is linked.\n\ | |
1932 | Otherwise returns NIL.") | |
1933 | (filename) | |
1934 | Lisp_Object filename; | |
1935 | { | |
1936 | #ifdef S_IFLNK | |
1937 | char *buf; | |
1938 | int bufsize; | |
1939 | int valsize; | |
1940 | Lisp_Object val; | |
32f4334d | 1941 | Lisp_Object handler; |
570d7624 JB |
1942 | |
1943 | CHECK_STRING (filename, 0); | |
1944 | filename = Fexpand_file_name (filename, Qnil); | |
1945 | ||
32f4334d RS |
1946 | /* If the file name has special constructs in it, |
1947 | call the corresponding file handler. */ | |
1948 | handler = find_file_handler (filename); | |
1949 | if (!NILP (handler)) | |
1950 | return call2 (handler, Qfile_symlink_p, filename); | |
1951 | ||
570d7624 JB |
1952 | bufsize = 100; |
1953 | while (1) | |
1954 | { | |
1955 | buf = (char *) xmalloc (bufsize); | |
1956 | bzero (buf, bufsize); | |
1957 | valsize = readlink (XSTRING (filename)->data, buf, bufsize); | |
1958 | if (valsize < bufsize) break; | |
1959 | /* Buffer was not long enough */ | |
1960 | free (buf); | |
1961 | bufsize *= 2; | |
1962 | } | |
1963 | if (valsize == -1) | |
1964 | { | |
1965 | free (buf); | |
1966 | return Qnil; | |
1967 | } | |
1968 | val = make_string (buf, valsize); | |
1969 | free (buf); | |
1970 | return val; | |
1971 | #else /* not S_IFLNK */ | |
1972 | return Qnil; | |
1973 | #endif /* not S_IFLNK */ | |
1974 | } | |
1975 | ||
1976 | /* Having this before file-symlink-p mysteriously caused it to be forgotten | |
1977 | on the RT/PC. */ | |
1978 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
1979 | "Return t if file FILENAME can be written or created by you.") | |
1980 | (filename) | |
1981 | Lisp_Object filename; | |
1982 | { | |
1983 | Lisp_Object abspath, dir; | |
32f4334d | 1984 | Lisp_Object handler; |
570d7624 JB |
1985 | |
1986 | CHECK_STRING (filename, 0); | |
1987 | abspath = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
1988 | |
1989 | /* If the file name has special constructs in it, | |
1990 | call the corresponding file handler. */ | |
09121adc | 1991 | handler = find_file_handler (abspath); |
32f4334d | 1992 | if (!NILP (handler)) |
09121adc | 1993 | return call2 (handler, Qfile_writable_p, abspath); |
32f4334d | 1994 | |
570d7624 JB |
1995 | if (access (XSTRING (abspath)->data, 0) >= 0) |
1996 | return (access (XSTRING (abspath)->data, 2) >= 0) ? Qt : Qnil; | |
1997 | dir = Ffile_name_directory (abspath); | |
1998 | #ifdef VMS | |
265a9e55 | 1999 | if (!NILP (dir)) |
570d7624 JB |
2000 | dir = Fdirectory_file_name (dir); |
2001 | #endif /* VMS */ | |
265a9e55 | 2002 | return (access (!NILP (dir) ? (char *) XSTRING (dir)->data : "", 2) >= 0 |
570d7624 JB |
2003 | ? Qt : Qnil); |
2004 | } | |
2005 | ||
2006 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, | |
2007 | "Return t if file FILENAME is the name of a directory as a file.\n\ | |
2008 | A directory name spec may be given instead; then the value is t\n\ | |
2009 | if the directory so specified exists and really is a directory.") | |
2010 | (filename) | |
2011 | Lisp_Object filename; | |
2012 | { | |
2013 | register Lisp_Object abspath; | |
2014 | struct stat st; | |
32f4334d | 2015 | Lisp_Object handler; |
570d7624 JB |
2016 | |
2017 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2018 | ||
32f4334d RS |
2019 | /* If the file name has special constructs in it, |
2020 | call the corresponding file handler. */ | |
09121adc | 2021 | handler = find_file_handler (abspath); |
32f4334d | 2022 | if (!NILP (handler)) |
09121adc | 2023 | return call2 (handler, Qfile_directory_p, abspath); |
32f4334d | 2024 | |
570d7624 JB |
2025 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2026 | return Qnil; | |
2027 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2028 | } | |
2029 | ||
b72dea2a JB |
2030 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
2031 | "Return t if file FILENAME is the name of a directory as a file,\n\ | |
2032 | and files in that directory can be opened by you. In order to use a\n\ | |
2033 | directory as a buffer's current directory, this predicate must return true.\n\ | |
2034 | A directory name spec may be given instead; then the value is t\n\ | |
2035 | if the directory so specified exists and really is a readable and\n\ | |
2036 | searchable directory.") | |
2037 | (filename) | |
2038 | Lisp_Object filename; | |
2039 | { | |
32f4334d RS |
2040 | Lisp_Object handler; |
2041 | ||
2042 | /* If the file name has special constructs in it, | |
2043 | call the corresponding file handler. */ | |
2044 | handler = find_file_handler (filename); | |
2045 | if (!NILP (handler)) | |
2046 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2047 | ||
b72dea2a JB |
2048 | if (NILP (Ffile_directory_p (filename)) |
2049 | || NILP (Ffile_executable_p (filename))) | |
2050 | return Qnil; | |
2051 | else | |
2052 | return Qt; | |
2053 | } | |
2054 | ||
570d7624 JB |
2055 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
2056 | "Return mode bits of FILE, as an integer.") | |
2057 | (filename) | |
2058 | Lisp_Object filename; | |
2059 | { | |
2060 | Lisp_Object abspath; | |
2061 | struct stat st; | |
32f4334d | 2062 | Lisp_Object handler; |
570d7624 JB |
2063 | |
2064 | abspath = expand_and_dir_to_file (filename, current_buffer->directory); | |
2065 | ||
32f4334d RS |
2066 | /* If the file name has special constructs in it, |
2067 | call the corresponding file handler. */ | |
09121adc | 2068 | handler = find_file_handler (abspath); |
32f4334d | 2069 | if (!NILP (handler)) |
09121adc | 2070 | return call2 (handler, Qfile_modes, abspath); |
32f4334d | 2071 | |
570d7624 JB |
2072 | if (stat (XSTRING (abspath)->data, &st) < 0) |
2073 | return Qnil; | |
2074 | return make_number (st.st_mode & 07777); | |
2075 | } | |
2076 | ||
2077 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, 0, | |
2078 | "Set mode bits of FILE to MODE (an integer).\n\ | |
2079 | Only the 12 low bits of MODE are used.") | |
2080 | (filename, mode) | |
2081 | Lisp_Object filename, mode; | |
2082 | { | |
2083 | Lisp_Object abspath; | |
32f4334d | 2084 | Lisp_Object handler; |
570d7624 JB |
2085 | |
2086 | abspath = Fexpand_file_name (filename, current_buffer->directory); | |
2087 | CHECK_NUMBER (mode, 1); | |
2088 | ||
32f4334d RS |
2089 | /* If the file name has special constructs in it, |
2090 | call the corresponding file handler. */ | |
09121adc | 2091 | handler = find_file_handler (abspath); |
32f4334d | 2092 | if (!NILP (handler)) |
09121adc | 2093 | return call3 (handler, Qset_file_modes, abspath, mode); |
32f4334d | 2094 | |
570d7624 JB |
2095 | #ifndef APOLLO |
2096 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2097 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2098 | #else /* APOLLO */ | |
2099 | if (!egetenv ("USE_DOMAIN_ACLS")) | |
2100 | { | |
2101 | struct stat st; | |
2102 | struct timeval tvp[2]; | |
2103 | ||
2104 | /* chmod on apollo also change the file's modtime; need to save the | |
2105 | modtime and then restore it. */ | |
2106 | if (stat (XSTRING (abspath)->data, &st) < 0) | |
2107 | { | |
2108 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2109 | return (Qnil); | |
2110 | } | |
2111 | ||
2112 | if (chmod (XSTRING (abspath)->data, XINT (mode)) < 0) | |
2113 | report_file_error ("Doing chmod", Fcons (abspath, Qnil)); | |
2114 | ||
2115 | /* reset the old accessed and modified times. */ | |
2116 | tvp[0].tv_sec = st.st_atime + 1; /* +1 due to an Apollo roundoff bug */ | |
2117 | tvp[0].tv_usec = 0; | |
2118 | tvp[1].tv_sec = st.st_mtime + 1; /* +1 due to an Apollo roundoff bug */ | |
2119 | tvp[1].tv_usec = 0; | |
2120 | ||
2121 | if (utimes (XSTRING (abspath)->data, tvp) < 0) | |
2122 | report_file_error ("Doing utimes", Fcons (abspath, Qnil)); | |
2123 | } | |
2124 | #endif /* APOLLO */ | |
2125 | ||
2126 | return Qnil; | |
2127 | } | |
2128 | ||
36a8c287 JB |
2129 | DEFUN ("set-umask", Fset_umask, Sset_umask, 1, 1, 0, |
2130 | "Select which permission bits to disable in newly created files.\n\ | |
2131 | MASK should be an integer; if a permission's bit in MASK is 1,\n\ | |
2132 | subsequently created files will not have that permission enabled.\n\ | |
2133 | Only the low 9 bits are used.\n\ | |
2134 | This setting is inherited by subprocesses.") | |
2135 | (mask) | |
2136 | Lisp_Object mask; | |
2137 | { | |
2138 | CHECK_NUMBER (mask, 0); | |
2139 | ||
2140 | umask (XINT (mask) & 0777); | |
2141 | ||
2142 | return Qnil; | |
2143 | } | |
2144 | ||
2145 | DEFUN ("umask", Fumask, Sumask, 0, 0, 0, | |
2146 | "Return the current umask value.\n\ | |
2147 | The umask value determines which permissions are enabled in newly\n\ | |
2148 | created files. If a permission's bit in the umask is 1, subsequently\n\ | |
2149 | created files will not have that permission enabled.") | |
2150 | () | |
2151 | { | |
2152 | Lisp_Object mask; | |
2153 | ||
2154 | XSET (mask, Lisp_Int, umask (0)); | |
2155 | umask (XINT (mask)); | |
2156 | ||
2157 | return mask; | |
2158 | } | |
2159 | ||
85ffea93 RS |
2160 | #ifdef unix |
2161 | ||
2162 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", | |
2163 | "Tell Unix to finish all pending disk updates.") | |
2164 | () | |
2165 | { | |
2166 | sync (); | |
2167 | return Qnil; | |
2168 | } | |
2169 | ||
2170 | #endif /* unix */ | |
2171 | ||
570d7624 JB |
2172 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
2173 | "Return t if file FILE1 is newer than file FILE2.\n\ | |
2174 | If FILE1 does not exist, the answer is nil;\n\ | |
2175 | otherwise, if FILE2 does not exist, the answer is t.") | |
2176 | (file1, file2) | |
2177 | Lisp_Object file1, file2; | |
2178 | { | |
32f4334d | 2179 | Lisp_Object abspath1, abspath2; |
570d7624 JB |
2180 | struct stat st; |
2181 | int mtime1; | |
32f4334d | 2182 | Lisp_Object handler; |
09121adc | 2183 | struct gcpro gcpro1, gcpro2; |
570d7624 JB |
2184 | |
2185 | CHECK_STRING (file1, 0); | |
2186 | CHECK_STRING (file2, 0); | |
2187 | ||
09121adc RS |
2188 | abspath1 = Qnil; |
2189 | GCPRO2 (abspath1, file2); | |
32f4334d RS |
2190 | abspath1 = expand_and_dir_to_file (file1, current_buffer->directory); |
2191 | abspath2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2192 | UNGCPRO; |
570d7624 | 2193 | |
32f4334d RS |
2194 | /* If the file name has special constructs in it, |
2195 | call the corresponding file handler. */ | |
2196 | handler = find_file_handler (abspath1); | |
2197 | if (!NILP (handler)) | |
2198 | return call3 (handler, Qfile_newer_than_file_p, abspath1, abspath2); | |
2199 | ||
2200 | if (stat (XSTRING (abspath1)->data, &st) < 0) | |
570d7624 JB |
2201 | return Qnil; |
2202 | ||
2203 | mtime1 = st.st_mtime; | |
2204 | ||
32f4334d | 2205 | if (stat (XSTRING (abspath2)->data, &st) < 0) |
570d7624 JB |
2206 | return Qt; |
2207 | ||
2208 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
2209 | } | |
2210 | \f | |
570d7624 JB |
2211 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
2212 | 1, 2, 0, | |
2213 | "Insert contents of file FILENAME after point.\n\ | |
2214 | Returns list of absolute pathname and length of data inserted.\n\ | |
2215 | If second argument VISIT is non-nil, the buffer's visited filename\n\ | |
2216 | and last save file modtime are set, and it is marked unmodified.\n\ | |
2217 | If visiting and the file does not exist, visiting is completed\n\ | |
2218 | before the error is signaled.") | |
2219 | (filename, visit) | |
2220 | Lisp_Object filename, visit; | |
2221 | { | |
2222 | struct stat st; | |
2223 | register int fd; | |
2224 | register int inserted = 0; | |
2225 | register int how_much; | |
2226 | int count = specpdl_ptr - specpdl; | |
2227 | struct gcpro gcpro1; | |
32f4334d RS |
2228 | Lisp_Object handler, val; |
2229 | ||
2230 | val = Qnil; | |
2231 | ||
570d7624 | 2232 | GCPRO1 (filename); |
265a9e55 | 2233 | if (!NILP (current_buffer->read_only)) |
570d7624 JB |
2234 | Fbarf_if_buffer_read_only(); |
2235 | ||
2236 | CHECK_STRING (filename, 0); | |
2237 | filename = Fexpand_file_name (filename, Qnil); | |
2238 | ||
32f4334d RS |
2239 | /* If the file name has special constructs in it, |
2240 | call the corresponding file handler. */ | |
2241 | handler = find_file_handler (filename); | |
2242 | if (!NILP (handler)) | |
2243 | { | |
2244 | val = call3 (handler, Qinsert_file_contents, filename, visit); | |
2245 | st.st_mtime = 0; | |
2246 | goto handled; | |
2247 | } | |
2248 | ||
570d7624 JB |
2249 | fd = -1; |
2250 | ||
2251 | #ifndef APOLLO | |
2252 | if (stat (XSTRING (filename)->data, &st) < 0 | |
349a7710 | 2253 | || (fd = open (XSTRING (filename)->data, 0)) < 0) |
570d7624 JB |
2254 | #else |
2255 | if ((fd = open (XSTRING (filename)->data, 0)) < 0 | |
2256 | || fstat (fd, &st) < 0) | |
2257 | #endif /* not APOLLO */ | |
2258 | { | |
2259 | if (fd >= 0) close (fd); | |
265a9e55 | 2260 | if (NILP (visit)) |
570d7624 JB |
2261 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2262 | st.st_mtime = -1; | |
2263 | how_much = 0; | |
2264 | goto notfound; | |
2265 | } | |
2266 | ||
2267 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
2268 | ||
be53b411 JB |
2269 | #ifdef S_IFSOCK |
2270 | /* This code will need to be changed in order to work on named | |
2271 | pipes, and it's probably just not worth it. So we should at | |
2272 | least signal an error. */ | |
2273 | if ((st.st_mode & S_IFMT) == S_IFSOCK) | |
2274 | Fsignal (Qfile_error, | |
2275 | Fcons (build_string ("reading from named pipe"), | |
2276 | Fcons (filename, Qnil))); | |
2277 | #endif | |
2278 | ||
570d7624 JB |
2279 | /* Supposedly happens on VMS. */ |
2280 | if (st.st_size < 0) | |
2281 | error ("File size is negative"); | |
be53b411 | 2282 | |
570d7624 JB |
2283 | { |
2284 | register Lisp_Object temp; | |
2285 | ||
2286 | /* Make sure point-max won't overflow after this insertion. */ | |
2287 | XSET (temp, Lisp_Int, st.st_size + Z); | |
2288 | if (st.st_size + Z != XINT (temp)) | |
2289 | error ("maximum buffer size exceeded"); | |
2290 | } | |
2291 | ||
265a9e55 | 2292 | if (NILP (visit)) |
570d7624 JB |
2293 | prepare_to_modify_buffer (point, point); |
2294 | ||
2295 | move_gap (point); | |
2296 | if (GAP_SIZE < st.st_size) | |
2297 | make_gap (st.st_size - GAP_SIZE); | |
2298 | ||
2299 | while (1) | |
2300 | { | |
2301 | int try = min (st.st_size - inserted, 64 << 10); | |
b5148e85 RS |
2302 | int this; |
2303 | ||
2304 | /* Allow quitting out of the actual I/O. */ | |
2305 | immediate_quit = 1; | |
2306 | QUIT; | |
2307 | this = read (fd, &FETCH_CHAR (point + inserted - 1) + 1, try); | |
2308 | immediate_quit = 0; | |
570d7624 JB |
2309 | |
2310 | if (this <= 0) | |
2311 | { | |
2312 | how_much = this; | |
2313 | break; | |
2314 | } | |
2315 | ||
2316 | GPT += this; | |
2317 | GAP_SIZE -= this; | |
2318 | ZV += this; | |
2319 | Z += this; | |
2320 | inserted += this; | |
2321 | } | |
2322 | ||
2323 | if (inserted > 0) | |
7d8451f1 RS |
2324 | { |
2325 | record_insert (point, inserted); | |
8d4e077b JA |
2326 | |
2327 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
2328 | offset_intervals (current_buffer, point, inserted); | |
7d8451f1 RS |
2329 | MODIFF++; |
2330 | } | |
570d7624 JB |
2331 | |
2332 | close (fd); | |
2333 | ||
2334 | /* Discard the unwind protect */ | |
2335 | specpdl_ptr = specpdl + count; | |
2336 | ||
2337 | if (how_much < 0) | |
2338 | error ("IO error reading %s: %s", | |
2339 | XSTRING (filename)->data, err_str (errno)); | |
2340 | ||
2341 | notfound: | |
32f4334d | 2342 | handled: |
570d7624 | 2343 | |
265a9e55 | 2344 | if (!NILP (visit)) |
570d7624 JB |
2345 | { |
2346 | current_buffer->undo_list = Qnil; | |
2347 | #ifdef APOLLO | |
2348 | stat (XSTRING (filename)->data, &st); | |
2349 | #endif | |
2350 | current_buffer->modtime = st.st_mtime; | |
2351 | current_buffer->save_modified = MODIFF; | |
2352 | current_buffer->auto_save_modified = MODIFF; | |
2353 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2354 | #ifdef CLASH_DETECTION | |
32f4334d RS |
2355 | if (NILP (handler)) |
2356 | { | |
2357 | if (!NILP (current_buffer->filename)) | |
2358 | unlock_file (current_buffer->filename); | |
2359 | unlock_file (filename); | |
2360 | } | |
570d7624 JB |
2361 | #endif /* CLASH_DETECTION */ |
2362 | current_buffer->filename = filename; | |
2363 | /* If visiting nonexistent file, return nil. */ | |
32f4334d | 2364 | if (current_buffer->modtime == -1) |
570d7624 JB |
2365 | report_file_error ("Opening input file", Fcons (filename, Qnil)); |
2366 | } | |
2367 | ||
2368 | signal_after_change (point, 0, inserted); | |
2369 | ||
32f4334d RS |
2370 | if (!NILP (val)) |
2371 | RETURN_UNGCPRO (val); | |
9b7828a5 JB |
2372 | RETURN_UNGCPRO (Fcons (filename, |
2373 | Fcons (make_number (inserted), | |
2374 | Qnil))); | |
570d7624 JB |
2375 | } |
2376 | ||
2377 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 5, | |
2378 | "r\nFWrite region to file: ", | |
2379 | "Write current region into specified file.\n\ | |
2380 | When called from a program, takes three arguments:\n\ | |
2381 | START, END and FILENAME. START and END are buffer positions.\n\ | |
2382 | Optional fourth argument APPEND if non-nil means\n\ | |
2383 | append to existing file contents (if any).\n\ | |
2384 | Optional fifth argument VISIT if t means\n\ | |
2385 | set the last-save-file-modtime of buffer to this file's modtime\n\ | |
2386 | and mark buffer not modified.\n\ | |
2387 | If VISIT is neither t nor nil, it means do not print\n\ | |
2388 | the \"Wrote file\" message.\n\ | |
3b7792ed RS |
2389 | If VISIT is a string, it is a second file name;\n\ |
2390 | the output goes to FILENAME, but the buffer is marked as visiting VISIT.\n\ | |
2391 | VISIT is also the file name to lock and unlock for clash detection.\n\ | |
570d7624 JB |
2392 | Kludgy feature: if START is a string, then that string is written\n\ |
2393 | to the file, instead of any buffer contents, and END is ignored.") | |
2394 | (start, end, filename, append, visit) | |
2395 | Lisp_Object start, end, filename, append, visit; | |
2396 | { | |
2397 | register int desc; | |
2398 | int failure; | |
2399 | int save_errno; | |
2400 | unsigned char *fn; | |
2401 | struct stat st; | |
2402 | int tem; | |
2403 | int count = specpdl_ptr - specpdl; | |
2404 | #ifdef VMS | |
2405 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ | |
2406 | #endif /* VMS */ | |
3eac9910 | 2407 | Lisp_Object handler; |
3b7792ed RS |
2408 | Lisp_Object visit_file = XTYPE (visit) == Lisp_String ? visit : filename; |
2409 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 JB |
2410 | |
2411 | /* Special kludge to simplify auto-saving */ | |
265a9e55 | 2412 | if (NILP (start)) |
570d7624 JB |
2413 | { |
2414 | XFASTINT (start) = BEG; | |
2415 | XFASTINT (end) = Z; | |
2416 | } | |
2417 | else if (XTYPE (start) != Lisp_String) | |
2418 | validate_region (&start, &end); | |
2419 | ||
3b7792ed | 2420 | GCPRO4 (start, filename, visit, visit_file); |
570d7624 | 2421 | filename = Fexpand_file_name (filename, Qnil); |
570d7624 | 2422 | |
32f4334d RS |
2423 | /* If the file name has special constructs in it, |
2424 | call the corresponding file handler. */ | |
2425 | handler = find_file_handler (filename); | |
3eac9910 | 2426 | |
32f4334d RS |
2427 | if (!NILP (handler)) |
2428 | { | |
2429 | Lisp_Object args[7]; | |
2430 | Lisp_Object val; | |
2431 | args[0] = handler; | |
2432 | args[1] = Qwrite_region; | |
2433 | args[2] = start; | |
2434 | args[3] = end; | |
2435 | args[4] = filename; | |
2436 | args[5] = append; | |
2437 | args[6] = visit; | |
2438 | val = Ffuncall (7, args); | |
2439 | ||
2440 | /* Do this before reporting IO error | |
2441 | to avoid a "file has changed on disk" warning on | |
2442 | next attempt to save. */ | |
3b7792ed | 2443 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
32f4334d RS |
2444 | { |
2445 | current_buffer->modtime = 0; | |
2446 | current_buffer->save_modified = MODIFF; | |
2447 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2448 | current_buffer->filename = visit_file; |
32f4334d | 2449 | } |
09121adc | 2450 | UNGCPRO; |
32f4334d RS |
2451 | return val; |
2452 | } | |
2453 | ||
570d7624 JB |
2454 | #ifdef CLASH_DETECTION |
2455 | if (!auto_saving) | |
3b7792ed | 2456 | lock_file (visit_file); |
570d7624 JB |
2457 | #endif /* CLASH_DETECTION */ |
2458 | ||
09121adc | 2459 | fn = XSTRING (filename)->data; |
570d7624 | 2460 | desc = -1; |
265a9e55 | 2461 | if (!NILP (append)) |
570d7624 JB |
2462 | desc = open (fn, O_WRONLY); |
2463 | ||
2464 | if (desc < 0) | |
2465 | #ifdef VMS | |
2466 | if (auto_saving) /* Overwrite any previous version of autosave file */ | |
2467 | { | |
2468 | vms_truncate (fn); /* if fn exists, truncate to zero length */ | |
2469 | desc = open (fn, O_RDWR); | |
2470 | if (desc < 0) | |
2471 | desc = creat_copy_attrs (XTYPE (current_buffer->filename) == Lisp_String | |
b72dea2a JB |
2472 | ? XSTRING (current_buffer->filename)->data : 0, |
2473 | fn); | |
570d7624 JB |
2474 | } |
2475 | else /* Write to temporary name and rename if no errors */ | |
2476 | { | |
2477 | Lisp_Object temp_name; | |
2478 | temp_name = Ffile_name_directory (filename); | |
2479 | ||
265a9e55 | 2480 | if (!NILP (temp_name)) |
570d7624 JB |
2481 | { |
2482 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
2483 | build_string ("$$SAVE$$"))); | |
2484 | fname = XSTRING (filename)->data; | |
2485 | fn = XSTRING (temp_name)->data; | |
2486 | desc = creat_copy_attrs (fname, fn); | |
2487 | if (desc < 0) | |
2488 | { | |
2489 | /* If we can't open the temporary file, try creating a new | |
2490 | version of the original file. VMS "creat" creates a | |
2491 | new version rather than truncating an existing file. */ | |
2492 | fn = fname; | |
2493 | fname = 0; | |
2494 | desc = creat (fn, 0666); | |
2495 | #if 0 /* This can clobber an existing file and fail to replace it, | |
2496 | if the user runs out of space. */ | |
2497 | if (desc < 0) | |
2498 | { | |
2499 | /* We can't make a new version; | |
2500 | try to truncate and rewrite existing version if any. */ | |
2501 | vms_truncate (fn); | |
2502 | desc = open (fn, O_RDWR); | |
2503 | } | |
2504 | #endif | |
2505 | } | |
2506 | } | |
2507 | else | |
2508 | desc = creat (fn, 0666); | |
2509 | } | |
2510 | #else /* not VMS */ | |
2511 | desc = creat (fn, auto_saving ? auto_save_mode_bits : 0666); | |
2512 | #endif /* not VMS */ | |
2513 | ||
09121adc RS |
2514 | UNGCPRO; |
2515 | ||
570d7624 JB |
2516 | if (desc < 0) |
2517 | { | |
2518 | #ifdef CLASH_DETECTION | |
2519 | save_errno = errno; | |
3b7792ed | 2520 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2521 | errno = save_errno; |
2522 | #endif /* CLASH_DETECTION */ | |
2523 | report_file_error ("Opening output file", Fcons (filename, Qnil)); | |
2524 | } | |
2525 | ||
2526 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
2527 | ||
265a9e55 | 2528 | if (!NILP (append)) |
570d7624 JB |
2529 | if (lseek (desc, 0, 2) < 0) |
2530 | { | |
2531 | #ifdef CLASH_DETECTION | |
3b7792ed | 2532 | if (!auto_saving) unlock_file (visit_file); |
570d7624 JB |
2533 | #endif /* CLASH_DETECTION */ |
2534 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
2535 | } | |
2536 | ||
2537 | #ifdef VMS | |
2538 | /* | |
2539 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
2540 | * if we do writes that don't end with a carriage return. Furthermore | |
2541 | * it cannot handle writes of more then 16K. The modified | |
2542 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
2543 | * this EXCEPT for the last record (iff it doesn't end with a carriage | |
2544 | * return). This implies that if your buffer doesn't end with a carriage | |
2545 | * return, you get one free... tough. However it also means that if | |
2546 | * we make two calls to sys_write (a la the following code) you can | |
2547 | * get one at the gap as well. The easiest way to fix this (honest) | |
2548 | * is to move the gap to the next newline (or the end of the buffer). | |
2549 | * Thus this change. | |
2550 | * | |
2551 | * Yech! | |
2552 | */ | |
2553 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
2554 | move_gap (find_next_newline (GPT, 1)); | |
2555 | #endif | |
2556 | ||
2557 | failure = 0; | |
2558 | immediate_quit = 1; | |
2559 | ||
2560 | if (XTYPE (start) == Lisp_String) | |
2561 | { | |
2562 | failure = 0 > e_write (desc, XSTRING (start)->data, | |
2563 | XSTRING (start)->size); | |
2564 | save_errno = errno; | |
2565 | } | |
2566 | else if (XINT (start) != XINT (end)) | |
2567 | { | |
2568 | if (XINT (start) < GPT) | |
2569 | { | |
2570 | register int end1 = XINT (end); | |
2571 | tem = XINT (start); | |
2572 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), | |
2573 | min (GPT, end1) - tem); | |
2574 | save_errno = errno; | |
2575 | } | |
2576 | ||
2577 | if (XINT (end) > GPT && !failure) | |
2578 | { | |
2579 | tem = XINT (start); | |
2580 | tem = max (tem, GPT); | |
2581 | failure = 0 > e_write (desc, &FETCH_CHAR (tem), XINT (end) - tem); | |
2582 | save_errno = errno; | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | immediate_quit = 0; | |
2587 | ||
2588 | #ifndef USG | |
2589 | #ifndef VMS | |
2590 | #ifndef BSD4_1 | |
570d7624 JB |
2591 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
2592 | Disk full in NFS may be reported here. */ | |
2593 | if (fsync (desc) < 0) | |
2594 | failure = 1, save_errno = errno; | |
2595 | #endif | |
2596 | #endif | |
570d7624 JB |
2597 | #endif |
2598 | ||
2599 | /* Spurious "file has changed on disk" warnings have been | |
2600 | observed on Suns as well. | |
2601 | It seems that `close' can change the modtime, under nfs. | |
2602 | ||
2603 | (This has supposedly been fixed in Sunos 4, | |
2604 | but who knows about all the other machines with NFS?) */ | |
2605 | #if 0 | |
2606 | ||
2607 | /* On VMS and APOLLO, must do the stat after the close | |
2608 | since closing changes the modtime. */ | |
2609 | #ifndef VMS | |
2610 | #ifndef APOLLO | |
2611 | /* Recall that #if defined does not work on VMS. */ | |
2612 | #define FOO | |
2613 | fstat (desc, &st); | |
2614 | #endif | |
2615 | #endif | |
2616 | #endif | |
2617 | ||
2618 | /* NFS can report a write failure now. */ | |
2619 | if (close (desc) < 0) | |
2620 | failure = 1, save_errno = errno; | |
2621 | ||
2622 | #ifdef VMS | |
2623 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
2624 | if (fname) | |
2625 | { | |
2626 | if (!failure) | |
2627 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
2628 | fn = fname; | |
2629 | } | |
2630 | #endif /* VMS */ | |
2631 | ||
2632 | #ifndef FOO | |
2633 | stat (fn, &st); | |
2634 | #endif | |
2635 | /* Discard the unwind protect */ | |
2636 | specpdl_ptr = specpdl + count; | |
2637 | ||
2638 | #ifdef CLASH_DETECTION | |
2639 | if (!auto_saving) | |
3b7792ed | 2640 | unlock_file (visit_file); |
570d7624 JB |
2641 | #endif /* CLASH_DETECTION */ |
2642 | ||
2643 | /* Do this before reporting IO error | |
2644 | to avoid a "file has changed on disk" warning on | |
2645 | next attempt to save. */ | |
3b7792ed | 2646 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2647 | current_buffer->modtime = st.st_mtime; |
2648 | ||
2649 | if (failure) | |
2650 | error ("IO error writing %s: %s", fn, err_str (save_errno)); | |
2651 | ||
3b7792ed | 2652 | if (EQ (visit, Qt) || XTYPE (visit) == Lisp_String) |
570d7624 JB |
2653 | { |
2654 | current_buffer->save_modified = MODIFF; | |
2655 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
3b7792ed | 2656 | current_buffer->filename = visit_file; |
570d7624 | 2657 | } |
265a9e55 | 2658 | else if (!NILP (visit)) |
570d7624 JB |
2659 | return Qnil; |
2660 | ||
2661 | if (!auto_saving) | |
3b7792ed | 2662 | message ("Wrote %s", XSTRING (visit_file)->data); |
570d7624 JB |
2663 | |
2664 | return Qnil; | |
2665 | } | |
2666 | ||
2667 | int | |
2668 | e_write (desc, addr, len) | |
2669 | int desc; | |
2670 | register char *addr; | |
2671 | register int len; | |
2672 | { | |
2673 | char buf[16 * 1024]; | |
2674 | register char *p, *end; | |
2675 | ||
2676 | if (!EQ (current_buffer->selective_display, Qt)) | |
2677 | return write (desc, addr, len) - len; | |
2678 | else | |
2679 | { | |
2680 | p = buf; | |
2681 | end = p + sizeof buf; | |
2682 | while (len--) | |
2683 | { | |
2684 | if (p == end) | |
2685 | { | |
2686 | if (write (desc, buf, sizeof buf) != sizeof buf) | |
2687 | return -1; | |
2688 | p = buf; | |
2689 | } | |
2690 | *p = *addr++; | |
2691 | if (*p++ == '\015') | |
2692 | p[-1] = '\n'; | |
2693 | } | |
2694 | if (p != buf) | |
2695 | if (write (desc, buf, p - buf) != p - buf) | |
2696 | return -1; | |
2697 | } | |
2698 | return 0; | |
2699 | } | |
2700 | ||
2701 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, | |
2702 | Sverify_visited_file_modtime, 1, 1, 0, | |
2703 | "Return t if last mod time of BUF's visited file matches what BUF records.\n\ | |
2704 | This means that the file has not been changed since it was visited or saved.") | |
2705 | (buf) | |
2706 | Lisp_Object buf; | |
2707 | { | |
2708 | struct buffer *b; | |
2709 | struct stat st; | |
32f4334d | 2710 | Lisp_Object handler; |
570d7624 JB |
2711 | |
2712 | CHECK_BUFFER (buf, 0); | |
2713 | b = XBUFFER (buf); | |
2714 | ||
2715 | if (XTYPE (b->filename) != Lisp_String) return Qt; | |
2716 | if (b->modtime == 0) return Qt; | |
2717 | ||
32f4334d RS |
2718 | /* If the file name has special constructs in it, |
2719 | call the corresponding file handler. */ | |
3eac9910 | 2720 | handler = find_file_handler (b->filename); |
32f4334d | 2721 | if (!NILP (handler)) |
09121adc | 2722 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 2723 | |
570d7624 JB |
2724 | if (stat (XSTRING (b->filename)->data, &st) < 0) |
2725 | { | |
2726 | /* If the file doesn't exist now and didn't exist before, | |
2727 | we say that it isn't modified, provided the error is a tame one. */ | |
2728 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
2729 | st.st_mtime = -1; | |
2730 | else | |
2731 | st.st_mtime = 0; | |
2732 | } | |
2733 | if (st.st_mtime == b->modtime | |
2734 | /* If both are positive, accept them if they are off by one second. */ | |
2735 | || (st.st_mtime > 0 && b->modtime > 0 | |
2736 | && (st.st_mtime == b->modtime + 1 | |
2737 | || st.st_mtime == b->modtime - 1))) | |
2738 | return Qt; | |
2739 | return Qnil; | |
2740 | } | |
2741 | ||
2742 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
2743 | Sclear_visited_file_modtime, 0, 0, 0, | |
2744 | "Clear out records of last mod time of visited file.\n\ | |
2745 | Next attempt to save will certainly not complain of a discrepancy.") | |
2746 | () | |
2747 | { | |
2748 | current_buffer->modtime = 0; | |
2749 | return Qnil; | |
2750 | } | |
2751 | ||
2752 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, | |
2753 | Sset_visited_file_modtime, 0, 0, 0, | |
2754 | "Update buffer's recorded modification time from the visited file's time.\n\ | |
2755 | Useful if the buffer was not read from the file normally\n\ | |
2756 | or if the file itself has been changed for some known benign reason.") | |
2757 | () | |
2758 | { | |
2759 | register Lisp_Object filename; | |
2760 | struct stat st; | |
3eac9910 | 2761 | Lisp_Object handler; |
570d7624 JB |
2762 | |
2763 | filename = Fexpand_file_name (current_buffer->filename, Qnil); | |
32f4334d RS |
2764 | |
2765 | /* If the file name has special constructs in it, | |
2766 | call the corresponding file handler. */ | |
2767 | handler = find_file_handler (filename); | |
2768 | if (!NILP (handler)) | |
2769 | current_buffer->modtime = 0; | |
570d7624 | 2770 | |
32f4334d | 2771 | else if (stat (XSTRING (filename)->data, &st) >= 0) |
570d7624 JB |
2772 | current_buffer->modtime = st.st_mtime; |
2773 | ||
2774 | return Qnil; | |
2775 | } | |
2776 | \f | |
2777 | Lisp_Object | |
2778 | auto_save_error () | |
2779 | { | |
2780 | unsigned char *name = XSTRING (current_buffer->name)->data; | |
2781 | ||
2782 | ring_bell (); | |
2783 | message ("Autosaving...error for %s", name); | |
de49a6d3 | 2784 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2785 | message ("Autosaving...error!for %s", name); |
de49a6d3 | 2786 | Fsleep_for (make_number (1), Qnil); |
570d7624 | 2787 | message ("Autosaving...error for %s", name); |
de49a6d3 | 2788 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2789 | return Qnil; |
2790 | } | |
2791 | ||
2792 | Lisp_Object | |
2793 | auto_save_1 () | |
2794 | { | |
2795 | unsigned char *fn; | |
2796 | struct stat st; | |
2797 | ||
2798 | /* Get visited file's mode to become the auto save file's mode. */ | |
2799 | if (stat (XSTRING (current_buffer->filename)->data, &st) >= 0) | |
2800 | /* But make sure we can overwrite it later! */ | |
2801 | auto_save_mode_bits = st.st_mode | 0600; | |
2802 | else | |
2803 | auto_save_mode_bits = 0666; | |
2804 | ||
2805 | return | |
2806 | Fwrite_region (Qnil, Qnil, | |
2807 | current_buffer->auto_save_file_name, | |
2808 | Qnil, Qlambda); | |
2809 | } | |
2810 | ||
2811 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", | |
2812 | "Auto-save all buffers that need it.\n\ | |
2813 | This is all buffers that have auto-saving enabled\n\ | |
2814 | and are changed since last auto-saved.\n\ | |
2815 | Auto-saving writes the buffer into a file\n\ | |
2816 | so that your editing is not lost if the system crashes.\n\ | |
2817 | This file is not the file you visited; that changes only when you save.\n\n\ | |
2818 | Non-nil first argument means do not print any message if successful.\n\ | |
4746118a | 2819 | Non-nil second argument means save only current buffer.") |
570d7624 JB |
2820 | (nomsg) |
2821 | Lisp_Object nomsg; | |
2822 | { | |
2823 | struct buffer *old = current_buffer, *b; | |
2824 | Lisp_Object tail, buf; | |
2825 | int auto_saved = 0; | |
2826 | char *omessage = echo_area_glyphs; | |
2827 | extern minibuf_level; | |
2828 | ||
2829 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
2830 | point to non-strings reached from Vbuffer_alist. */ | |
2831 | ||
2832 | auto_saving = 1; | |
2833 | if (minibuf_level) | |
2834 | nomsg = Qt; | |
2835 | ||
2836 | /* Vrun_hooks is nil before emacs is dumped, and inc-vers.el will | |
2837 | eventually call do-auto-save, so don't err here in that case. */ | |
265a9e55 | 2838 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
2839 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
2840 | ||
2841 | for (tail = Vbuffer_alist; XGCTYPE (tail) == Lisp_Cons; | |
2842 | tail = XCONS (tail)->cdr) | |
2843 | { | |
2844 | buf = XCONS (XCONS (tail)->car)->cdr; | |
2845 | b = XBUFFER (buf); | |
2846 | /* Check for auto save enabled | |
2847 | and file changed since last auto save | |
2848 | and file changed since last real save. */ | |
2849 | if (XTYPE (b->auto_save_file_name) == Lisp_String | |
2850 | && b->save_modified < BUF_MODIFF (b) | |
2851 | && b->auto_save_modified < BUF_MODIFF (b)) | |
2852 | { | |
2853 | if ((XFASTINT (b->save_length) * 10 | |
2854 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
2855 | /* A short file is likely to change a large fraction; | |
2856 | spare the user annoying messages. */ | |
2857 | && XFASTINT (b->save_length) > 5000 | |
2858 | /* These messages are frequent and annoying for `*mail*'. */ | |
2859 | && !EQ (b->filename, Qnil)) | |
2860 | { | |
2861 | /* It has shrunk too much; turn off auto-saving here. */ | |
2862 | message ("Buffer %s has shrunk a lot; auto save turned off there", | |
2863 | XSTRING (b->name)->data); | |
2864 | /* User can reenable saving with M-x auto-save. */ | |
2865 | b->auto_save_file_name = Qnil; | |
2866 | /* Prevent warning from repeating if user does so. */ | |
2867 | XFASTINT (b->save_length) = 0; | |
2fd3c56b | 2868 | Fsleep_for (make_number (1), Qnil); |
570d7624 JB |
2869 | continue; |
2870 | } | |
2871 | set_buffer_internal (b); | |
265a9e55 | 2872 | if (!auto_saved && NILP (nomsg)) |
570d7624 JB |
2873 | message1 ("Auto-saving..."); |
2874 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
2875 | auto_saved++; | |
2876 | b->auto_save_modified = BUF_MODIFF (b); | |
2877 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2878 | set_buffer_internal (old); | |
2879 | } | |
2880 | } | |
2881 | ||
b67f2ca5 RS |
2882 | /* Prevent another auto save till enough input events come in. */ |
2883 | record_auto_save (); | |
570d7624 | 2884 | |
265a9e55 | 2885 | if (auto_saved && NILP (nomsg)) |
570d7624 JB |
2886 | message1 (omessage ? omessage : "Auto-saving...done"); |
2887 | ||
2888 | auto_saving = 0; | |
2889 | return Qnil; | |
2890 | } | |
2891 | ||
2892 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
2893 | Sset_buffer_auto_saved, 0, 0, 0, | |
2894 | "Mark current buffer as auto-saved with its current text.\n\ | |
2895 | No auto-save file will be written until the buffer changes again.") | |
2896 | () | |
2897 | { | |
2898 | current_buffer->auto_save_modified = MODIFF; | |
2899 | XFASTINT (current_buffer->save_length) = Z - BEG; | |
2900 | return Qnil; | |
2901 | } | |
2902 | ||
2903 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
2904 | 0, 0, 0, | |
2905 | "Return t if buffer has been auto-saved since last read in or saved.") | |
2906 | () | |
2907 | { | |
2908 | return (current_buffer->save_modified < current_buffer->auto_save_modified) ? Qt : Qnil; | |
2909 | } | |
2910 | \f | |
2911 | /* Reading and completing file names */ | |
2912 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
2913 | ||
2914 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, | |
2915 | 3, 3, 0, | |
2916 | "Internal subroutine for read-file-name. Do not call this.") | |
2917 | (string, dir, action) | |
2918 | Lisp_Object string, dir, action; | |
2919 | /* action is nil for complete, t for return list of completions, | |
2920 | lambda for verify final value */ | |
2921 | { | |
2922 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc RS |
2923 | int changed; |
2924 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
2925 | ||
2926 | realdir = dir; | |
2927 | name = string; | |
2928 | orig_string = Qnil; | |
2929 | specdir = Qnil; | |
2930 | changed = 0; | |
2931 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
2932 | GCPRO4 (string, realdir, name, specdir); | |
570d7624 JB |
2933 | |
2934 | if (XSTRING (string)->size == 0) | |
2935 | { | |
570d7624 | 2936 | if (EQ (action, Qlambda)) |
09121adc RS |
2937 | { |
2938 | UNGCPRO; | |
2939 | return Qnil; | |
2940 | } | |
570d7624 JB |
2941 | } |
2942 | else | |
2943 | { | |
2944 | orig_string = string; | |
2945 | string = Fsubstitute_in_file_name (string); | |
09121adc | 2946 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 2947 | name = Ffile_name_nondirectory (string); |
09121adc RS |
2948 | val = Ffile_name_directory (string); |
2949 | if (! NILP (val)) | |
2950 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
2951 | } |
2952 | ||
265a9e55 | 2953 | if (NILP (action)) |
570d7624 JB |
2954 | { |
2955 | specdir = Ffile_name_directory (string); | |
2956 | val = Ffile_name_completion (name, realdir); | |
09121adc | 2957 | UNGCPRO; |
570d7624 JB |
2958 | if (XTYPE (val) != Lisp_String) |
2959 | { | |
09121adc | 2960 | if (changed) |
570d7624 | 2961 | return string; |
09121adc | 2962 | return val; |
570d7624 JB |
2963 | } |
2964 | ||
265a9e55 | 2965 | if (!NILP (specdir)) |
570d7624 JB |
2966 | val = concat2 (specdir, val); |
2967 | #ifndef VMS | |
2968 | { | |
2969 | register unsigned char *old, *new; | |
2970 | register int n; | |
2971 | int osize, count; | |
2972 | ||
2973 | osize = XSTRING (val)->size; | |
2974 | /* Quote "$" as "$$" to get it past substitute-in-file-name */ | |
2975 | for (n = osize, count = 0, old = XSTRING (val)->data; n > 0; n--) | |
2976 | if (*old++ == '$') count++; | |
2977 | if (count > 0) | |
2978 | { | |
2979 | old = XSTRING (val)->data; | |
2980 | val = Fmake_string (make_number (osize + count), make_number (0)); | |
2981 | new = XSTRING (val)->data; | |
2982 | for (n = osize; n > 0; n--) | |
2983 | if (*old != '$') | |
2984 | *new++ = *old++; | |
2985 | else | |
2986 | { | |
2987 | *new++ = '$'; | |
2988 | *new++ = '$'; | |
2989 | old++; | |
2990 | } | |
2991 | } | |
2992 | } | |
2993 | #endif /* Not VMS */ | |
09121adc | 2994 | return val; |
570d7624 | 2995 | } |
09121adc | 2996 | UNGCPRO; |
570d7624 JB |
2997 | |
2998 | if (EQ (action, Qt)) | |
2999 | return Ffile_name_all_completions (name, realdir); | |
3000 | /* Only other case actually used is ACTION = lambda */ | |
3001 | #ifdef VMS | |
3002 | /* Supposedly this helps commands such as `cd' that read directory names, | |
3003 | but can someone explain how it helps them? -- RMS */ | |
3004 | if (XSTRING (name)->size == 0) | |
3005 | return Qt; | |
3006 | #endif /* VMS */ | |
3007 | return Ffile_exists_p (string); | |
3008 | } | |
3009 | ||
3010 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3011 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3012 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3013 | Default name to DEFAULT if user enters a null string.\n\ | |
3014 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3015 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3016 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3017 | Fifth arg INITIAL specifies text to start with.\n\ | |
3018 | DIR defaults to current buffer's directory default.") | |
3019 | (prompt, dir, defalt, mustmatch, initial) | |
3020 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3021 | { | |
85b5fe07 | 3022 | Lisp_Object val, insdef, insdef1, tem; |
570d7624 JB |
3023 | struct gcpro gcpro1, gcpro2; |
3024 | register char *homedir; | |
3025 | int count; | |
3026 | ||
265a9e55 | 3027 | if (NILP (dir)) |
570d7624 | 3028 | dir = current_buffer->directory; |
265a9e55 | 3029 | if (NILP (defalt)) |
570d7624 JB |
3030 | defalt = current_buffer->filename; |
3031 | ||
3032 | /* If dir starts with user's homedir, change that to ~. */ | |
3033 | homedir = (char *) egetenv ("HOME"); | |
3034 | if (homedir != 0 | |
3035 | && XTYPE (dir) == Lisp_String | |
3036 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3037 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3038 | { | |
3039 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3040 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3041 | XSTRING (dir)->data[0] = '~'; | |
3042 | } | |
3043 | ||
3044 | if (insert_default_directory) | |
3045 | { | |
3046 | insdef = dir; | |
85b5fe07 | 3047 | insdef1 = dir; |
265a9e55 | 3048 | if (!NILP (initial)) |
570d7624 | 3049 | { |
15c65264 | 3050 | Lisp_Object args[2], pos; |
570d7624 JB |
3051 | |
3052 | args[0] = insdef; | |
3053 | args[1] = initial; | |
3054 | insdef = Fconcat (2, args); | |
509b05ed | 3055 | pos = make_number (XSTRING (dir)->size); |
85b5fe07 | 3056 | insdef1 = Fcons (insdef, pos); |
570d7624 | 3057 | } |
570d7624 JB |
3058 | } |
3059 | else | |
85b5fe07 | 3060 | insdef = Qnil, insdef1 = Qnil; |
570d7624 JB |
3061 | |
3062 | #ifdef VMS | |
3063 | count = specpdl_ptr - specpdl; | |
3064 | specbind (intern ("completion-ignore-case"), Qt); | |
3065 | #endif | |
3066 | ||
3067 | GCPRO2 (insdef, defalt); | |
3068 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
85b5fe07 | 3069 | dir, mustmatch, insdef1, |
15c65264 | 3070 | Qfile_name_history); |
570d7624 JB |
3071 | |
3072 | #ifdef VMS | |
3073 | unbind_to (count, Qnil); | |
3074 | #endif | |
3075 | ||
3076 | UNGCPRO; | |
265a9e55 | 3077 | if (NILP (val)) |
570d7624 JB |
3078 | error ("No file name specified"); |
3079 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3080 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3081 | return defalt; |
3082 | return Fsubstitute_in_file_name (val); | |
3083 | } | |
3084 | ||
3085 | #if 0 /* Old version */ | |
3086 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 5, 0, | |
3087 | "Read file name, prompting with PROMPT and completing in directory DIR.\n\ | |
3088 | Value is not expanded---you must call `expand-file-name' yourself.\n\ | |
3089 | Default name to DEFAULT if user enters a null string.\n\ | |
3090 | (If DEFAULT is omitted, the visited file name is used.)\n\ | |
3091 | Fourth arg MUSTMATCH non-nil means require existing file's name.\n\ | |
3092 | Non-nil and non-t means also require confirmation after completion.\n\ | |
3093 | Fifth arg INITIAL specifies text to start with.\n\ | |
3094 | DIR defaults to current buffer's directory default.") | |
3095 | (prompt, dir, defalt, mustmatch, initial) | |
3096 | Lisp_Object prompt, dir, defalt, mustmatch, initial; | |
3097 | { | |
3098 | Lisp_Object val, insdef, tem; | |
3099 | struct gcpro gcpro1, gcpro2; | |
3100 | register char *homedir; | |
3101 | int count; | |
3102 | ||
265a9e55 | 3103 | if (NILP (dir)) |
570d7624 | 3104 | dir = current_buffer->directory; |
265a9e55 | 3105 | if (NILP (defalt)) |
570d7624 JB |
3106 | defalt = current_buffer->filename; |
3107 | ||
3108 | /* If dir starts with user's homedir, change that to ~. */ | |
3109 | homedir = (char *) egetenv ("HOME"); | |
3110 | if (homedir != 0 | |
3111 | && XTYPE (dir) == Lisp_String | |
3112 | && !strncmp (homedir, XSTRING (dir)->data, strlen (homedir)) | |
3113 | && XSTRING (dir)->data[strlen (homedir)] == '/') | |
3114 | { | |
3115 | dir = make_string (XSTRING (dir)->data + strlen (homedir) - 1, | |
3116 | XSTRING (dir)->size - strlen (homedir) + 1); | |
3117 | XSTRING (dir)->data[0] = '~'; | |
3118 | } | |
3119 | ||
265a9e55 | 3120 | if (!NILP (initial)) |
570d7624 JB |
3121 | insdef = initial; |
3122 | else if (insert_default_directory) | |
3123 | insdef = dir; | |
3124 | else | |
3125 | insdef = build_string (""); | |
3126 | ||
3127 | #ifdef VMS | |
3128 | count = specpdl_ptr - specpdl; | |
3129 | specbind (intern ("completion-ignore-case"), Qt); | |
3130 | #endif | |
3131 | ||
3132 | GCPRO2 (insdef, defalt); | |
3133 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
3134 | dir, mustmatch, | |
15c65264 RS |
3135 | insert_default_directory ? insdef : Qnil, |
3136 | Qfile_name_history); | |
570d7624 JB |
3137 | |
3138 | #ifdef VMS | |
3139 | unbind_to (count, Qnil); | |
3140 | #endif | |
3141 | ||
3142 | UNGCPRO; | |
265a9e55 | 3143 | if (NILP (val)) |
570d7624 JB |
3144 | error ("No file name specified"); |
3145 | tem = Fstring_equal (val, insdef); | |
265a9e55 | 3146 | if (!NILP (tem) && !NILP (defalt)) |
570d7624 JB |
3147 | return defalt; |
3148 | return Fsubstitute_in_file_name (val); | |
3149 | } | |
3150 | #endif /* Old version */ | |
3151 | \f | |
3152 | syms_of_fileio () | |
3153 | { | |
0bf2eed2 RS |
3154 | Qexpand_file_name = intern ("expand-file-name"); |
3155 | Qdirectory_file_name = intern ("directory-file-name"); | |
3156 | Qfile_name_directory = intern ("file-name-directory"); | |
3157 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
3158 | Qfile_name_as_directory = intern ("file-name-as-directory"); | |
32f4334d RS |
3159 | Qcopy_file = intern ("copy-file"); |
3160 | Qmake_directory = intern ("make-directory"); | |
3161 | Qdelete_directory = intern ("delete-directory"); | |
3162 | Qdelete_file = intern ("delete-file"); | |
3163 | Qrename_file = intern ("rename-file"); | |
3164 | Qadd_name_to_file = intern ("add-name-to-file"); | |
3165 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
3166 | Qfile_exists_p = intern ("file-exists-p"); | |
3167 | Qfile_executable_p = intern ("file-executable-p"); | |
3168 | Qfile_readable_p = intern ("file-readable-p"); | |
3169 | Qfile_symlink_p = intern ("file-symlink-p"); | |
3170 | Qfile_writable_p = intern ("file-writable-p"); | |
3171 | Qfile_directory_p = intern ("file-directory-p"); | |
3172 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); | |
3173 | Qfile_modes = intern ("file-modes"); | |
3174 | Qset_file_modes = intern ("set-file-modes"); | |
3175 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); | |
3176 | Qinsert_file_contents = intern ("insert-file-contents"); | |
3177 | Qwrite_region = intern ("write-region"); | |
3178 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3179 | ||
15c65264 RS |
3180 | Qfile_name_history = intern ("file-name-history"); |
3181 | Fset (Qfile_name_history, Qnil); | |
3182 | ||
3183 | staticpro (&Qcopy_file); | |
3184 | staticpro (&Qmake_directory); | |
3185 | staticpro (&Qdelete_directory); | |
3186 | staticpro (&Qdelete_file); | |
3187 | staticpro (&Qrename_file); | |
3188 | staticpro (&Qadd_name_to_file); | |
3189 | staticpro (&Qmake_symbolic_link); | |
3190 | staticpro (&Qfile_exists_p); | |
3191 | staticpro (&Qfile_executable_p); | |
3192 | staticpro (&Qfile_readable_p); | |
3193 | staticpro (&Qfile_symlink_p); | |
3194 | staticpro (&Qfile_writable_p); | |
3195 | staticpro (&Qfile_directory_p); | |
3196 | staticpro (&Qfile_accessible_directory_p); | |
3197 | staticpro (&Qfile_modes); | |
3198 | staticpro (&Qset_file_modes); | |
3199 | staticpro (&Qfile_newer_than_file_p); | |
3200 | staticpro (&Qinsert_file_contents); | |
3201 | staticpro (&Qwrite_region); | |
3202 | staticpro (&Qverify_visited_file_modtime); | |
3203 | staticpro (&Qfile_name_history); | |
3204 | ||
570d7624 JB |
3205 | Qfile_error = intern ("file-error"); |
3206 | staticpro (&Qfile_error); | |
3207 | Qfile_already_exists = intern("file-already-exists"); | |
3208 | staticpro (&Qfile_already_exists); | |
3209 | ||
3210 | Fput (Qfile_error, Qerror_conditions, | |
3211 | Fcons (Qfile_error, Fcons (Qerror, Qnil))); | |
3212 | Fput (Qfile_error, Qerror_message, | |
3213 | build_string ("File error")); | |
3214 | ||
3215 | Fput (Qfile_already_exists, Qerror_conditions, | |
3216 | Fcons (Qfile_already_exists, | |
3217 | Fcons (Qfile_error, Fcons (Qerror, Qnil)))); | |
3218 | Fput (Qfile_already_exists, Qerror_message, | |
3219 | build_string ("File already exists")); | |
3220 | ||
3221 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, | |
3222 | "*Non-nil means when reading a filename start with default dir in minibuffer."); | |
3223 | insert_default_directory = 1; | |
3224 | ||
3225 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
3226 | "*Non-nil means write new files with record format `stmlf'.\n\ | |
3227 | nil means use format `var'. This variable is meaningful only on VMS."); | |
3228 | vms_stmlf_recfm = 0; | |
3229 | ||
1d1826db RS |
3230 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
3231 | "*Alist of elements (REGEXP . HANDLER) for file names handled specially.\n\ | |
3232 | If a file name matches REGEXP, then all I/O on that file is done by calling\n\ | |
3233 | HANDLER.\n\ | |
3234 | \n\ | |
3235 | The first argument given to HANDLER is the name of the I/O primitive\n\ | |
3236 | to be handled; the remaining arguments are the arguments that were\n\ | |
3237 | passed to that primitive. For example, if you do\n\ | |
3238 | (file-exists-p FILENAME)\n\ | |
3239 | and FILENAME is handled by HANDLER, then HANDLER is called like this:\n\ | |
a5f8804e | 3240 | (funcall HANDLER 'file-exists-p FILENAME)"); |
09121adc RS |
3241 | Vfile_name_handler_alist = Qnil; |
3242 | ||
570d7624 JB |
3243 | defsubr (&Sfile_name_directory); |
3244 | defsubr (&Sfile_name_nondirectory); | |
3245 | defsubr (&Sfile_name_as_directory); | |
3246 | defsubr (&Sdirectory_file_name); | |
3247 | defsubr (&Smake_temp_name); | |
3248 | defsubr (&Sexpand_file_name); | |
3249 | defsubr (&Ssubstitute_in_file_name); | |
3250 | defsubr (&Scopy_file); | |
3251 | defsubr (&Smake_directory); | |
aa734e17 | 3252 | defsubr (&Sdelete_directory); |
570d7624 JB |
3253 | defsubr (&Sdelete_file); |
3254 | defsubr (&Srename_file); | |
3255 | defsubr (&Sadd_name_to_file); | |
3256 | #ifdef S_IFLNK | |
3257 | defsubr (&Smake_symbolic_link); | |
3258 | #endif /* S_IFLNK */ | |
3259 | #ifdef VMS | |
3260 | defsubr (&Sdefine_logical_name); | |
3261 | #endif /* VMS */ | |
3262 | #ifdef HPUX_NET | |
3263 | defsubr (&Ssysnetunam); | |
3264 | #endif /* HPUX_NET */ | |
3265 | defsubr (&Sfile_name_absolute_p); | |
3266 | defsubr (&Sfile_exists_p); | |
3267 | defsubr (&Sfile_executable_p); | |
3268 | defsubr (&Sfile_readable_p); | |
3269 | defsubr (&Sfile_writable_p); | |
3270 | defsubr (&Sfile_symlink_p); | |
3271 | defsubr (&Sfile_directory_p); | |
b72dea2a | 3272 | defsubr (&Sfile_accessible_directory_p); |
570d7624 JB |
3273 | defsubr (&Sfile_modes); |
3274 | defsubr (&Sset_file_modes); | |
36a8c287 JB |
3275 | defsubr (&Sset_umask); |
3276 | defsubr (&Sumask); | |
570d7624 JB |
3277 | defsubr (&Sfile_newer_than_file_p); |
3278 | defsubr (&Sinsert_file_contents); | |
3279 | defsubr (&Swrite_region); | |
3280 | defsubr (&Sverify_visited_file_modtime); | |
3281 | defsubr (&Sclear_visited_file_modtime); | |
3282 | defsubr (&Sset_visited_file_modtime); | |
3283 | defsubr (&Sdo_auto_save); | |
3284 | defsubr (&Sset_buffer_auto_saved); | |
3285 | defsubr (&Srecent_auto_save_p); | |
3286 | ||
3287 | defsubr (&Sread_file_name_internal); | |
3288 | defsubr (&Sread_file_name); | |
85ffea93 | 3289 | |
483a2e10 | 3290 | #ifdef unix |
85ffea93 | 3291 | defsubr (&Sunix_sync); |
483a2e10 | 3292 | #endif |
570d7624 | 3293 | } |